./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/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 858612fdb9071600e83746a6e504d4acbbe533c1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/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 858612fdb9071600e83746a6e504d4acbbe533c1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:57:08,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:57:08,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:57:08,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:57:08,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:57:08,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:57:08,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:57:08,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:57:08,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:57:08,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:57:08,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:57:08,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:57:08,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:57:08,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:57:08,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:57:08,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:57:08,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:57:08,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:57:08,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:57:08,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:57:08,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:57:08,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:57:08,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:57:08,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:57:08,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:57:08,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:57:08,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:57:08,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:57:08,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:57:08,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:57:08,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:57:08,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:57:08,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:57:08,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:57:08,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:57:08,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:57:08,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:57:08,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:57:08,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:57:08,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:57:08,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:57:08,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:57:08,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:57:08,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:57:08,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:57:08,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:57:08,276 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:57:08,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:57:08,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:57:08,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:57:08,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:57:08,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:57:08,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:57:08,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:57:08,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:57:08,279 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:57:08,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:57:08,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:57:08,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:57:08,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:57:08,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:57:08,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:57:08,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:57:08,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:57:08,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:57:08,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:57:08,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:57:08,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:57:08,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:57:08,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:57:08,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:57:08,282 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_96f0fa2d-e756-4c04-8419-2537f6e61b2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-12-01 14:57:08,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:57:08,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:57:08,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:57:08,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:57:08,565 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:57:08,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-12-01 14:57:08,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/62ba87bce/91d3785b828e406e9f452e503241d2aa/FLAGf56821573 [2020-12-01 14:57:09,078 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:57:09,080 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-12-01 14:57:09,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/62ba87bce/91d3785b828e406e9f452e503241d2aa/FLAGf56821573 [2020-12-01 14:57:09,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/62ba87bce/91d3785b828e406e9f452e503241d2aa [2020-12-01 14:57:09,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:57:09,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:57:09,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:57:09,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:57:09,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:57:09,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e1464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09, skipping insertion in model container [2020-12-01 14:57:09,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:57:09,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:57:09,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:57:09,736 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:57:09,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:57:09,773 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:57:09,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09 WrapperNode [2020-12-01 14:57:09,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:57:09,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:57:09,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:57:09,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:57:09,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:57:09,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:57:09,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:57:09,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:57:09,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... [2020-12-01 14:57:09,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:57:09,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:57:09,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:57:09,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:57:09,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:57:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:57:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:57:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 14:57:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:57:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:57:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 14:57:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:57:10,384 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:57:10,384 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 14:57:10,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:10 BoogieIcfgContainer [2020-12-01 14:57:10,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:57:10,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:57:10,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:57:10,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:57:10,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:57:09" (1/3) ... [2020-12-01 14:57:10,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac43726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:57:10, skipping insertion in model container [2020-12-01 14:57:10,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:09" (2/3) ... [2020-12-01 14:57:10,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac43726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:57:10, skipping insertion in model container [2020-12-01 14:57:10,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:10" (3/3) ... [2020-12-01 14:57:10,401 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-12-01 14:57:10,431 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:57:10,434 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:57:10,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 14:57:10,466 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:57:10,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:57:10,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:57:10,467 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:57:10,467 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:57:10,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:57:10,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:57:10,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:57:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-01 14:57:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 14:57:10,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:10,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:10,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:10,490 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-12-01 14:57:10,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:57:10,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011476788] [2020-12-01 14:57:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:57:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:10,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011476788] [2020-12-01 14:57:10,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:10,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:57:10,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416509522] [2020-12-01 14:57:10,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:57:10,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:57:10,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:57:10,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:57:10,665 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-01 14:57:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:10,694 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-12-01 14:57:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:57:10,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 14:57:10,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:10,714 INFO L225 Difference]: With dead ends: 55 [2020-12-01 14:57:10,717 INFO L226 Difference]: Without dead ends: 25 [2020-12-01 14:57:10,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:57:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-01 14:57:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-01 14:57:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-01 14:57:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-12-01 14:57:10,753 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-12-01 14:57:10,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:10,754 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-12-01 14:57:10,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:57:10,754 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-12-01 14:57:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 14:57:10,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:10,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:10,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:57:10,756 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:10,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:10,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-12-01 14:57:10,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:57:10,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362811125] [2020-12-01 14:57:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:57:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:10,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362811125] [2020-12-01 14:57:10,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:10,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:57:10,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559514476] [2020-12-01 14:57:10,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:57:10,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:57:10,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:57:10,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:57:10,849 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-12-01 14:57:10,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:10,918 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-01 14:57:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:57:10,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 14:57:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:10,921 INFO L225 Difference]: With dead ends: 41 [2020-12-01 14:57:10,921 INFO L226 Difference]: Without dead ends: 36 [2020-12-01 14:57:10,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:57:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-01 14:57:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-12-01 14:57:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 14:57:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-01 14:57:10,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-12-01 14:57:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:10,937 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-01 14:57:10,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:57:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-01 14:57:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:57:10,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:10,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:10,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:57:10,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:10,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:10,944 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-12-01 14:57:10,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:57:10,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128942591] [2020-12-01 14:57:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:57:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:11,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128942591] [2020-12-01 14:57:11,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:11,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:57:11,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921742212] [2020-12-01 14:57:11,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:57:11,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:57:11,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:57:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:57:11,039 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-01 14:57:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:11,091 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-01 14:57:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:57:11,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 14:57:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:11,093 INFO L225 Difference]: With dead ends: 43 [2020-12-01 14:57:11,093 INFO L226 Difference]: Without dead ends: 38 [2020-12-01 14:57:11,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:57:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-01 14:57:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-01 14:57:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 14:57:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-01 14:57:11,099 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-12-01 14:57:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:11,099 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-01 14:57:11,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:57:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-01 14:57:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 14:57:11,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:11,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:11,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:57:11,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-12-01 14:57:11,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:57:11,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264866333] [2020-12-01 14:57:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:57:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:11,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264866333] [2020-12-01 14:57:11,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:11,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:57:11,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132342099] [2020-12-01 14:57:11,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:57:11,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:57:11,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:57:11,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:57:11,157 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-01 14:57:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:11,208 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-12-01 14:57:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:57:11,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 14:57:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:11,210 INFO L225 Difference]: With dead ends: 45 [2020-12-01 14:57:11,210 INFO L226 Difference]: Without dead ends: 40 [2020-12-01 14:57:11,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:57:11,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-01 14:57:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-12-01 14:57:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 14:57:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-01 14:57:11,215 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-12-01 14:57:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:11,216 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-01 14:57:11,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:57:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-01 14:57:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 14:57:11,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:11,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:11,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 14:57:11,218 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:11,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:11,229 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-12-01 14:57:11,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:57:11,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101969576] [2020-12-01 14:57:11,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:57:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:11,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101969576] [2020-12-01 14:57:11,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:11,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:57:11,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702056756] [2020-12-01 14:57:11,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:57:11,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:57:11,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:57:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:57:11,321 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-12-01 14:57:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:11,388 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-12-01 14:57:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:57:11,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-01 14:57:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:11,390 INFO L225 Difference]: With dead ends: 43 [2020-12-01 14:57:11,390 INFO L226 Difference]: Without dead ends: 38 [2020-12-01 14:57:11,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:57:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-01 14:57:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-12-01 14:57:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 14:57:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-01 14:57:11,396 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-12-01 14:57:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:11,397 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-01 14:57:11,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:57:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-01 14:57:11,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 14:57:11,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:11,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:11,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 14:57:11,398 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:11,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:11,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-12-01 14:57:11,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:57:11,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67928649] [2020-12-01 14:57:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:57:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:57:11,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:57:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:57:11,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:57:11,480 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:57:11,480 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 14:57:11,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 14:57:11,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:57:11 BoogieIcfgContainer [2020-12-01 14:57:11,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:57:11,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:57:11,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:57:11,512 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:57:11,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:10" (3/4) ... [2020-12-01 14:57:11,516 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 14:57:11,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:57:11,518 INFO L168 Benchmark]: Toolchain (without parser) took 2008.86 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 72.0 MB in the beginning and 85.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:11,518 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory is still 40.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:57:11,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.06 ms. Allocated memory is still 100.7 MB. Free memory was 71.7 MB in the beginning and 77.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:11,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.62 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:11,521 INFO L168 Benchmark]: Boogie Preprocessor took 59.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:11,523 INFO L168 Benchmark]: RCFGBuilder took 472.96 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 55.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:11,524 INFO L168 Benchmark]: TraceAbstraction took 1123.10 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 55.0 MB in the beginning and 86.5 MB in the end (delta: -31.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:57:11,524 INFO L168 Benchmark]: Witness Printer took 4.72 ms. Allocated memory is still 125.8 MB. Free memory was 86.5 MB in the beginning and 85.7 MB in the end (delta: 733.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:57:11,528 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory is still 40.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.06 ms. Allocated memory is still 100.7 MB. Free memory was 71.7 MB in the beginning and 77.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.62 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.41 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 74.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 472.96 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 55.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1123.10 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 55.0 MB in the beginning and 86.5 MB in the end (delta: -31.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.72 ms. Allocated memory is still 125.8 MB. Free memory was 86.5 MB in the beginning and 85.7 MB in the end (delta: 733.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1230.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 14:57:14,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:57:14,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:57:14,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:57:14,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:57:14,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:57:14,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:57:14,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:57:14,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:57:14,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:57:14,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:57:14,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:57:14,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:57:14,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:57:14,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:57:14,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:57:14,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:57:14,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:57:14,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:57:14,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:57:14,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:57:14,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:57:14,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:57:14,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:57:14,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:57:14,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:57:14,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:57:14,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:57:14,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:57:14,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:57:14,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:57:14,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:57:14,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:57:14,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:57:14,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:57:14,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:57:14,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:57:14,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:57:14,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:57:14,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:57:14,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:57:14,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 14:57:14,246 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:57:14,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:57:14,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:57:14,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:57:14,250 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:57:14,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:57:14,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:57:14,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:57:14,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:57:14,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:57:14,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:57:14,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:57:14,253 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 14:57:14,253 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 14:57:14,253 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:57:14,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:57:14,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:57:14,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:57:14,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:57:14,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:57:14,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:57:14,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:57:14,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:57:14,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:57:14,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:57:14,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:57:14,256 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 14:57:14,256 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 14:57:14,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:57:14,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:57:14,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 14:57:14,257 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_96f0fa2d-e756-4c04-8419-2537f6e61b2f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-12-01 14:57:14,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:57:14,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:57:14,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:57:14,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:57:14,724 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:57:14,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-12-01 14:57:14,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/18bec4cb2/0ef36dce41e9461696fc65a4acf031b3/FLAGa6b22084c [2020-12-01 14:57:15,336 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:57:15,336 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-12-01 14:57:15,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/18bec4cb2/0ef36dce41e9461696fc65a4acf031b3/FLAGa6b22084c [2020-12-01 14:57:15,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/data/18bec4cb2/0ef36dce41e9461696fc65a4acf031b3 [2020-12-01 14:57:15,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:57:15,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:57:15,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:57:15,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:57:15,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:57:15,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:57:15" (1/1) ... [2020-12-01 14:57:15,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7729ceef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:15, skipping insertion in model container [2020-12-01 14:57:15,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:57:15" (1/1) ... [2020-12-01 14:57:15,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:57:15,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:57:15,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:57:15,934 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:57:15,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:57:16,007 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:57:16,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16 WrapperNode [2020-12-01 14:57:16,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:57:16,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:57:16,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:57:16,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:57:16,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:57:16,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:57:16,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:57:16,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:57:16,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... [2020-12-01 14:57:16,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:57:16,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:57:16,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:57:16,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:57:16,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:57:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 14:57:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 14:57:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:57:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 14:57:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:57:16,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:57:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:57:16,862 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:57:16,862 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 14:57:16,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:16 BoogieIcfgContainer [2020-12-01 14:57:16,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:57:16,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:57:16,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:57:16,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:57:16,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:57:15" (1/3) ... [2020-12-01 14:57:16,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574fd11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:57:16, skipping insertion in model container [2020-12-01 14:57:16,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:57:16" (2/3) ... [2020-12-01 14:57:16,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574fd11f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:57:16, skipping insertion in model container [2020-12-01 14:57:16,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:16" (3/3) ... [2020-12-01 14:57:16,893 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-12-01 14:57:16,908 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:57:16,911 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:57:16,922 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 14:57:16,959 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:57:16,960 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:57:16,960 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:57:16,960 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:57:16,960 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:57:16,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:57:16,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:57:16,961 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:57:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-01 14:57:16,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 14:57:16,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:16,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:16,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-12-01 14:57:16,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:57:17,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856284592] [2020-12-01 14:57:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 14:57:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:17,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 14:57:17,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:57:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:17,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:57:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:17,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856284592] [2020-12-01 14:57:17,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:17,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 14:57:17,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215494075] [2020-12-01 14:57:17,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:57:17,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:57:17,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:57:17,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:57:17,202 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-01 14:57:17,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:17,219 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-12-01 14:57:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:57:17,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 14:57:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:17,229 INFO L225 Difference]: With dead ends: 55 [2020-12-01 14:57:17,230 INFO L226 Difference]: Without dead ends: 25 [2020-12-01 14:57:17,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:57:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-01 14:57:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-01 14:57:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-01 14:57:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-12-01 14:57:17,265 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-12-01 14:57:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:17,266 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-12-01 14:57:17,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:57:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-12-01 14:57:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 14:57:17,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:17,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:17,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 14:57:17,484 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:17,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:17,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-12-01 14:57:17,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:57:17,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533116083] [2020-12-01 14:57:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 14:57:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:17,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 14:57:17,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:57:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:17,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:57:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:17,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533116083] [2020-12-01 14:57:17,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:17,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 14:57:17,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912226793] [2020-12-01 14:57:17,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 14:57:17,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:57:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:57:17,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:57:17,756 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-12-01 14:57:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:17,860 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-12-01 14:57:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:57:17,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-01 14:57:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:17,862 INFO L225 Difference]: With dead ends: 52 [2020-12-01 14:57:17,862 INFO L226 Difference]: Without dead ends: 47 [2020-12-01 14:57:17,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 14:57:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-01 14:57:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-12-01 14:57:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 14:57:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-12-01 14:57:17,870 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-12-01 14:57:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:17,871 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-12-01 14:57:17,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 14:57:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-12-01 14:57:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 14:57:17,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:17,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:18,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 14:57:18,073 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-12-01 14:57:18,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:57:18,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598033655] [2020-12-01 14:57:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 14:57:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:18,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 14:57:18,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:57:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:18,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:57:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:18,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598033655] [2020-12-01 14:57:18,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:18,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-12-01 14:57:18,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725367624] [2020-12-01 14:57:18,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 14:57:18,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:57:18,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 14:57:18,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-01 14:57:18,542 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-12-01 14:57:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:18,922 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-12-01 14:57:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:57:18,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-01 14:57:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:18,924 INFO L225 Difference]: With dead ends: 36 [2020-12-01 14:57:18,924 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 14:57:18,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-01 14:57:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 14:57:18,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-01 14:57:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-01 14:57:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-12-01 14:57:18,930 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-12-01 14:57:18,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:18,930 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-12-01 14:57:18,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 14:57:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-12-01 14:57:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 14:57:18,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:18,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:19,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 14:57:19,132 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:19,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-12-01 14:57:19,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:57:19,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100989885] [2020-12-01 14:57:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/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 [2020-12-01 14:57:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:19,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 14:57:19,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:57:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:19,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:57:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:19,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100989885] [2020-12-01 14:57:19,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:19,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 14:57:19,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881910074] [2020-12-01 14:57:19,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 14:57:19,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:57:19,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:57:19,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:57:19,329 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-12-01 14:57:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:19,437 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-12-01 14:57:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:57:19,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-01 14:57:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:19,441 INFO L225 Difference]: With dead ends: 52 [2020-12-01 14:57:19,441 INFO L226 Difference]: Without dead ends: 47 [2020-12-01 14:57:19,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 14:57:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-01 14:57:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-12-01 14:57:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 14:57:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-12-01 14:57:19,452 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-12-01 14:57:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:19,453 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-12-01 14:57:19,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 14:57:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-01 14:57:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 14:57:19,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:19,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:19,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 14:57:19,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:19,671 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-12-01 14:57:19,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:57:19,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200068445] [2020-12-01 14:57:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/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 [2020-12-01 14:57:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:19,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 14:57:19,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:57:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:19,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:57:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:20,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200068445] [2020-12-01 14:57:20,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:20,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-12-01 14:57:20,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412295884] [2020-12-01 14:57:20,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 14:57:20,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:57:20,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 14:57:20,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-01 14:57:20,177 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-12-01 14:57:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:20,685 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-12-01 14:57:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:57:20,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-01 14:57:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:20,686 INFO L225 Difference]: With dead ends: 32 [2020-12-01 14:57:20,686 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 14:57:20,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-12-01 14:57:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 14:57:20,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-01 14:57:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 14:57:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-01 14:57:20,691 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-12-01 14:57:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:20,692 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-01 14:57:20,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 14:57:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-01 14:57:20,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 14:57:20,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:57:20,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:57:20,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 14:57:20,904 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:57:20,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:57:20,904 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-12-01 14:57:20,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 14:57:20,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268938060] [2020-12-01 14:57:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-01 14:57:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:57:21,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 14:57:21,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:57:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:21,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 14:57:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:57:21,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268938060] [2020-12-01 14:57:21,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:57:21,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-12-01 14:57:21,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983736236] [2020-12-01 14:57:21,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 14:57:21,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 14:57:21,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 14:57:21,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-12-01 14:57:21,304 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-12-01 14:57:21,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:57:21,690 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-12-01 14:57:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:57:21,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-01 14:57:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:57:21,691 INFO L225 Difference]: With dead ends: 23 [2020-12-01 14:57:21,691 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 14:57:21,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-01 14:57:21,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 14:57:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 14:57:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 14:57:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 14:57:21,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-01 14:57:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:57:21,693 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:57:21,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 14:57:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 14:57:21,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 14:57:21,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 14:57:21,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 14:57:22,069 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-12-01 14:57:22,069 INFO L262 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-12-01 14:57:22,069 INFO L258 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-12-01 14:57:22,069 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 14:57:22,069 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-12-01 14:57:22,070 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-12-01 14:57:22,070 INFO L262 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-12-01 14:57:22,071 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-12-01 14:57:22,071 INFO L262 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-12-01 14:57:22,071 INFO L258 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-12-01 14:57:22,071 INFO L262 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-12-01 14:57:22,071 INFO L262 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-12-01 14:57:22,071 INFO L258 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-12-01 14:57:22,071 INFO L258 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) .cse0))) [2020-12-01 14:57:22,071 INFO L265 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2020-12-01 14:57:22,071 INFO L262 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-12-01 14:57:22,072 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-12-01 14:57:22,072 INFO L262 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-12-01 14:57:22,072 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-12-01 14:57:22,089 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 14:57:22,092 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 14:57:22,099 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 14:57:22,100 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 14:57:22,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:57:22 BoogieIcfgContainer [2020-12-01 14:57:22,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:57:22,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:57:22,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:57:22,107 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:57:22,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:57:16" (3/4) ... [2020-12-01 14:57:22,111 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 14:57:22,126 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-12-01 14:57:22,127 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-01 14:57:22,127 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 14:57:22,128 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:57:22,158 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) [2020-12-01 14:57:22,159 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) [2020-12-01 14:57:22,160 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) [2020-12-01 14:57:22,216 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_96f0fa2d-e756-4c04-8419-2537f6e61b2f/bin/uautomizer/witness.graphml [2020-12-01 14:57:22,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:57:22,221 INFO L168 Benchmark]: Toolchain (without parser) took 6520.23 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 56.1 MB in the beginning and 54.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:22,222 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:57:22,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.73 ms. Allocated memory is still 77.6 MB. Free memory was 55.9 MB in the beginning and 45.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:22,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.60 ms. Allocated memory is still 77.6 MB. Free memory was 45.0 MB in the beginning and 59.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:22,223 INFO L168 Benchmark]: Boogie Preprocessor took 61.91 ms. Allocated memory is still 77.6 MB. Free memory was 59.9 MB in the beginning and 58.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:57:22,224 INFO L168 Benchmark]: RCFGBuilder took 689.73 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 38.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:22,224 INFO L168 Benchmark]: TraceAbstraction took 5217.64 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 59.6 MB in the beginning and 58.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:22,225 INFO L168 Benchmark]: Witness Printer took 114.29 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 54.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:57:22,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory was 33.5 MB in the beginning and 33.4 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.73 ms. Allocated memory is still 77.6 MB. Free memory was 55.9 MB in the beginning and 45.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.60 ms. Allocated memory is still 77.6 MB. Free memory was 45.0 MB in the beginning and 59.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.91 ms. Allocated memory is still 77.6 MB. Free memory was 59.9 MB in the beginning and 58.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 689.73 ms. Allocated memory is still 77.6 MB. Free memory was 58.3 MB in the beginning and 38.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5217.64 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 59.6 MB in the beginning and 58.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Witness Printer took 114.29 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 54.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 46]: Loop Invariant [2020-12-01 14:57:22,240 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 14:57:22,241 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 18]: Loop Invariant [2020-12-01 14:57:22,241 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-01 14:57:22,252 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8416 SizeOfPredicates, 32 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...