./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/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 68ec6db07696364982a927374298598825d0f6ca ................................................................................................................................................................................................................................................................................................... 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_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/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 68ec6db07696364982a927374298598825d0f6ca ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:49:11,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:49:11,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:49:11,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:49:11,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:49:11,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:49:11,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:49:11,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:49:11,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:49:11,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:49:11,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:49:11,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:49:11,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:49:11,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:49:11,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:49:11,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:49:11,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:49:11,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:49:11,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:49:11,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:49:11,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:49:11,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:49:11,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:49:11,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:49:11,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:49:11,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:49:11,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:49:11,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:49:11,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:49:11,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:49:11,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:49:11,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:49:11,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:49:11,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:49:11,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:49:11,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:49:11,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:49:11,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:49:11,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:49:11,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:49:11,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:49:11,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:49:11,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:49:11,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:49:11,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:49:11,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:49:11,294 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:49:11,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:49:11,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:49:11,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:49:11,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:49:11,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:49:11,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:49:11,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:49:11,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:49:11,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:49:11,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:49:11,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:49:11,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:49:11,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:49:11,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:49:11,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:49:11,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:49:11,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:49:11,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:49:11,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:49:11,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:49:11,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:49:11,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:49:11,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:49:11,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:49:11,306 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_e6c54f13-59e6-4aad-abf3-398aff239579/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ec6db07696364982a927374298598825d0f6ca [2020-11-29 22:49:11,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:49:11,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:49:11,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:49:11,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:49:11,706 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:49:11,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2020-11-29 22:49:11,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/310587b7a/9189fb202bfd47fc97f42eafa8a8dd64/FLAGf60609349 [2020-11-29 22:49:12,460 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:49:12,466 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2020-11-29 22:49:12,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/310587b7a/9189fb202bfd47fc97f42eafa8a8dd64/FLAGf60609349 [2020-11-29 22:49:12,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/310587b7a/9189fb202bfd47fc97f42eafa8a8dd64 [2020-11-29 22:49:12,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:49:12,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:49:12,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:49:12,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:49:12,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:49:12,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:49:12" (1/1) ... [2020-11-29 22:49:12,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dbea5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:12, skipping insertion in model container [2020-11-29 22:49:12,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:49:12" (1/1) ... [2020-11-29 22:49:12,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:49:12,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:49:13,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:49:13,191 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:49:13,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:49:13,250 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:49:13,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13 WrapperNode [2020-11-29 22:49:13,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:49:13,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:49:13,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:49:13,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:49:13,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:49:13,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:49:13,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:49:13,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:49:13,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... [2020-11-29 22:49:13,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:49:13,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:49:13,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:49:13,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:49:13,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:49:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:49:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:49:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 22:49:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:49:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 22:49:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:49:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:49:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:49:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:49:14,069 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:49:14,069 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 22:49:14,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:14 BoogieIcfgContainer [2020-11-29 22:49:14,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:49:14,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:49:14,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:49:14,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:49:14,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:49:12" (1/3) ... [2020-11-29 22:49:14,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214075ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:49:14, skipping insertion in model container [2020-11-29 22:49:14,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:13" (2/3) ... [2020-11-29 22:49:14,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214075ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:49:14, skipping insertion in model container [2020-11-29 22:49:14,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:14" (3/3) ... [2020-11-29 22:49:14,086 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2020-11-29 22:49:14,104 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:49:14,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:49:14,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:49:14,163 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:49:14,164 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:49:14,164 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:49:14,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:49:14,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:49:14,164 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:49:14,164 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:49:14,165 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:49:14,180 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-29 22:49:14,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:49:14,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:14,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:14,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2020-11-29 22:49:14,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:14,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904169840] [2020-11-29 22:49:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:14,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904169840] [2020-11-29 22:49:14,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:14,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:49:14,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014062712] [2020-11-29 22:49:14,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:49:14,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:49:14,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:49:14,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:49:14,383 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-29 22:49:14,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:14,404 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2020-11-29 22:49:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:49:14,406 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 22:49:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:14,417 INFO L225 Difference]: With dead ends: 67 [2020-11-29 22:49:14,417 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 22:49:14,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:49:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 22:49:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 22:49:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:49:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 22:49:14,459 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2020-11-29 22:49:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:14,459 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 22:49:14,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:49:14,459 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 22:49:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:49:14,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:14,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:14,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:49:14,461 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:14,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2020-11-29 22:49:14,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:49:14,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006173424] [2020-11-29 22:49:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:49:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:49:14,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:49:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:49:14,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:49:14,654 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:49:14,655 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:49:14,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:49:14,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:49:14 BoogieIcfgContainer [2020-11-29 22:49:14,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:49:14,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:49:14,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:49:14,726 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:49:14,727 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:14" (3/4) ... [2020-11-29 22:49:14,730 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:49:14,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:49:14,735 INFO L168 Benchmark]: Toolchain (without parser) took 1920.93 ms. Allocated memory is still 104.9 MB. Free memory was 72.5 MB in the beginning and 76.6 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:14,736 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 73.4 MB. Free memory was 49.7 MB in the beginning and 49.6 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:14,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.97 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 80.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:14,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.34 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:14,740 INFO L168 Benchmark]: Boogie Preprocessor took 33.53 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 77.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:14,741 INFO L168 Benchmark]: RCFGBuilder took 726.42 ms. Allocated memory is still 104.9 MB. Free memory was 76.9 MB in the beginning and 55.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:49:14,742 INFO L168 Benchmark]: TraceAbstraction took 645.01 ms. Allocated memory is still 104.9 MB. Free memory was 55.3 MB in the beginning and 76.6 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:14,744 INFO L168 Benchmark]: Witness Printer took 5.74 ms. Allocated memory is still 104.9 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:49:14,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 73.4 MB. Free memory was 49.7 MB in the beginning and 49.6 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 423.97 ms. Allocated memory is still 104.9 MB. Free memory was 72.3 MB in the beginning and 80.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.34 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.53 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 77.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 726.42 ms. Allocated memory is still 104.9 MB. Free memory was 76.9 MB in the beginning and 55.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 645.01 ms. Allocated memory is still 104.9 MB. Free memory was 55.3 MB in the beginning and 76.6 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.74 ms. Allocated memory is still 104.9 MB. Free memory is still 76.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 122, overapproximation of someBinaryArithmeticFLOAToperation at line 34, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L118] float x = 1.0f; [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L33] COND TRUE ((ix & 0x7fffffff) == 0) [L34] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_0930.c", 3, "reach_error") VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 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: 45 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=35occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:49:17,540 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 22:49:17,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:49:17,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:49:17,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:49:17,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:49:17,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:49:17,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:49:17,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:49:17,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:49:17,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:49:17,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:49:17,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:49:17,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 22:49:17,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:49:17,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:49:17,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:49:17,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:49:17,734 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:49:17,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:49:17,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:49:17,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:49:17,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:49:17,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:49:17,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:49:17,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:49:17,737 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 22:49:17,737 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 22:49:17,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:49:17,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:49:17,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:49:17,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:49:17,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:49:17,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:49:17,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:49:17,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:49:17,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:49:17,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:49:17,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:49:17,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:49:17,741 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 22:49:17,741 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 22:49:17,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:49:17,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:49:17,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 22:49:17,742 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_e6c54f13-59e6-4aad-abf3-398aff239579/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68ec6db07696364982a927374298598825d0f6ca [2020-11-29 22:49:18,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:49:18,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:49:18,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:49:18,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:49:18,212 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:49:18,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2020-11-29 22:49:18,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/bbfa3c4e1/fc3989e478a14ddd88bb52b996a3b39b/FLAG7bd7940fa [2020-11-29 22:49:19,007 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:49:19,008 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2020-11-29 22:49:19,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/bbfa3c4e1/fc3989e478a14ddd88bb52b996a3b39b/FLAG7bd7940fa [2020-11-29 22:49:19,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/data/bbfa3c4e1/fc3989e478a14ddd88bb52b996a3b39b [2020-11-29 22:49:19,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:49:19,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:49:19,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:49:19,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:49:19,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:49:19,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4d112c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19, skipping insertion in model container [2020-11-29 22:49:19,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:49:19,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:49:19,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:49:19,589 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:49:19,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:49:19,684 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:49:19,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19 WrapperNode [2020-11-29 22:49:19,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:49:19,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:49:19,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:49:19,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:49:19,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:49:19,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:49:19,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:49:19,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:49:19,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... [2020-11-29 22:49:19,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:49:19,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:49:19,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:49:19,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:49:19,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:49:19,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 22:49:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:49:19,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 22:49:19,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 22:49:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:49:19,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:49:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 22:49:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 22:49:19,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:49:35,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:49:35,112 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 22:49:35,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:35 BoogieIcfgContainer [2020-11-29 22:49:35,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:49:35,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:49:35,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:49:35,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:49:35,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:49:19" (1/3) ... [2020-11-29 22:49:35,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c50e42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:49:35, skipping insertion in model container [2020-11-29 22:49:35,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:49:19" (2/3) ... [2020-11-29 22:49:35,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c50e42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:49:35, skipping insertion in model container [2020-11-29 22:49:35,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:35" (3/3) ... [2020-11-29 22:49:35,125 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2020-11-29 22:49:35,138 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:49:35,143 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:49:35,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:49:35,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:49:35,202 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:49:35,202 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:49:35,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:49:35,204 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:49:35,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:49:35,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:49:35,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:49:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-29 22:49:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:49:35,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:35,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:35,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2020-11-29 22:49:35,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:49:35,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295924877] [2020-11-29 22:49:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 22:49:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:36,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 22:49:36,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:36,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:49:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:36,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295924877] [2020-11-29 22:49:36,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:36,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 22:49:36,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518711481] [2020-11-29 22:49:36,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:49:36,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:49:36,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:49:36,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:49:36,131 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-29 22:49:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:36,153 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2020-11-29 22:49:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:49:36,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 22:49:36,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:36,165 INFO L225 Difference]: With dead ends: 67 [2020-11-29 22:49:36,166 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 22:49:36,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:49:36,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 22:49:36,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 22:49:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:49:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 22:49:36,227 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2020-11-29 22:49:36,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:36,227 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 22:49:36,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:49:36,228 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 22:49:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:49:36,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:36,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:36,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 22:49:36,455 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:36,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2020-11-29 22:49:36,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:49:36,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691658143] [2020-11-29 22:49:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 22:49:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:37,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:49:37,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:37,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:49:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:37,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691658143] [2020-11-29 22:49:37,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:37,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 22:49:37,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931150587] [2020-11-29 22:49:37,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:49:37,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:49:37,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:49:37,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:49:37,308 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-11-29 22:49:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:40,083 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2020-11-29 22:49:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:49:40,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 22:49:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:40,236 INFO L225 Difference]: With dead ends: 60 [2020-11-29 22:49:40,236 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 22:49:40,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:49:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 22:49:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2020-11-29 22:49:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 22:49:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2020-11-29 22:49:40,243 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2020-11-29 22:49:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:40,244 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-11-29 22:49:40,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:49:40,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-11-29 22:49:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:49:40,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:40,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:40,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 22:49:40,482 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:40,483 INFO L82 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2020-11-29 22:49:40,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:49:40,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778727391] [2020-11-29 22:49:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 22:49:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:41,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 22:49:41,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:41,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:49:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:41,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778727391] [2020-11-29 22:49:41,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:41,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 22:49:41,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647900746] [2020-11-29 22:49:41,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 22:49:41,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:49:41,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 22:49:41,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:49:41,282 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand 7 states. [2020-11-29 22:49:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:49:54,126 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-11-29 22:49:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:49:54,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-29 22:49:54,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:49:54,133 INFO L225 Difference]: With dead ends: 50 [2020-11-29 22:49:54,133 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 22:49:54,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:49:54,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 22:49:54,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 31. [2020-11-29 22:49:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:49:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2020-11-29 22:49:54,145 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2020-11-29 22:49:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:49:54,145 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2020-11-29 22:49:54,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 22:49:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2020-11-29 22:49:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:49:54,146 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:49:54,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:49:54,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 22:49:54,351 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:49:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:49:54,352 INFO L82 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2020-11-29 22:49:54,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:49:54,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864152600] [2020-11-29 22:49:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 22:49:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:49:54,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:49:54,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:49:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:55,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:49:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:49:55,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864152600] [2020-11-29 22:49:55,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:49:55,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-29 22:49:55,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665168791] [2020-11-29 22:49:55,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 22:49:55,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:49:55,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 22:49:55,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-29 22:49:55,519 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 12 states. [2020-11-29 22:50:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:50:14,214 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-11-29 22:50:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:50:14,240 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-11-29 22:50:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:50:14,241 INFO L225 Difference]: With dead ends: 58 [2020-11-29 22:50:14,241 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 22:50:14,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-29 22:50:14,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 22:50:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-11-29 22:50:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 22:50:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-29 22:50:14,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 20 [2020-11-29 22:50:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:50:14,250 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-29 22:50:14,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 22:50:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-29 22:50:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 22:50:14,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:50:14,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:50:14,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 22:50:14,452 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:50:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:50:14,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1140293842, now seen corresponding path program 1 times [2020-11-29 22:50:14,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:50:14,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183962106] [2020-11-29 22:50:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 22:50:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:50:15,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 22:50:15,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:50:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:50:15,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:50:15,981 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-29 22:50:17,702 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 22:50:49,172 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 22:51:12,415 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-29 22:51:12,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183962106] [2020-11-29 22:51:12,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-29 22:51:12,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1581718956] [2020-11-29 22:51:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-29 22:51:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:14,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 22:51:14,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2d0000d5 [2020-11-29 22:51:14,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827666682] [2020-11-29 22:51:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e6c54f13-59e6-4aad-abf3-398aff239579/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:51:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:51:15,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 22:51:15,124 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2d0000d5 [2020-11-29 22:51:15,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:51:15,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-29 22:51:15,125 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-29 22:51:15,125 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:51:15,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 22:51:15,763 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-29 22:51:15,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:51:15 BoogieIcfgContainer [2020-11-29 22:51:15,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:51:15,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:51:15,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:51:15,765 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:51:15,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:49:35" (3/4) ... [2020-11-29 22:51:15,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:51:15,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:51:15,772 INFO L168 Benchmark]: Toolchain (without parser) took 116432.72 ms. Allocated memory is still 71.3 MB. Free memory was 55.8 MB in the beginning and 28.2 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:15,773 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 59.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:15,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.40 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 54.9 MB in the end (delta: 706.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:15,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.72 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 52.9 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:15,783 INFO L168 Benchmark]: Boogie Preprocessor took 56.83 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 50.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:15,784 INFO L168 Benchmark]: RCFGBuilder took 15290.27 ms. Allocated memory is still 71.3 MB. Free memory was 50.8 MB in the beginning and 50.2 MB in the end (delta: 541.7 kB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:15,784 INFO L168 Benchmark]: TraceAbstraction took 100647.39 ms. Allocated memory is still 71.3 MB. Free memory was 49.9 MB in the beginning and 28.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:51:15,785 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 71.3 MB. Free memory was 28.4 MB in the beginning and 28.2 MB in the end (delta: 205.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:51:15,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 59.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.40 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 54.9 MB in the end (delta: 706.7 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.72 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 52.9 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.83 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 50.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 15290.27 ms. Allocated memory is still 71.3 MB. Free memory was 50.8 MB in the beginning and 50.2 MB in the end (delta: 541.7 kB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 100647.39 ms. Allocated memory is still 71.3 MB. Free memory was 49.9 MB in the beginning and 28.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.86 ms. Allocated memory is still 71.3 MB. Free memory was 28.4 MB in the beginning and 28.2 MB in the end (delta: 205.8 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L118] float x = 1.0f; [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 [L33] COND FALSE !(((ix & 0x7fffffff) == 0)) [L35] COND FALSE !(ix < 0) [L37] COND FALSE !(!((ix) < 0x7f800000L)) [L39] COND FALSE !(((ix) < 0x00800000L)) [L48] k += (ix >> 23) - 127 [L49] ix &= 0x007fffff [L50] i = (ix + (0x95f64 << 3)) & 0x800000 [L52] ieee_float_shape_type sf_u; [L53] sf_u.word = (ix | (i ^ 0x3f800000)) [L54] EXPR sf_u.value [L54] (x) = sf_u.value [L56] k += (i >> 23) [L57] f = x - (float)1.0 [L58] COND TRUE (0x007fffff & (15 + ix)) < 16 [L59] COND FALSE !(f == zero_log) [L67] R = f * f * ((float)0.5 - (float)0.33333333333333333 * f) [L68] COND TRUE k == 0 [L69] return f - R; [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_0930.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 100.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 34.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 166 SDslu, 297 SDs, 0 SdLazy, 91 SolverSat, 16 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 33.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 110 ConstructedInterpolants, 36 QuantifiedInterpolants, 12586 SizeOfPredicates, 20 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...