./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/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_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/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-a4ecdab [2020-11-29 18:59:11,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:59:11,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:59:11,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:59:11,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:59:11,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:59:11,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:59:11,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:59:11,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:59:11,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:59:11,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:59:11,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:59:11,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:59:11,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:59:11,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:59:11,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:59:11,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:59:11,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:59:11,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:59:11,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:59:11,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:59:11,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:59:11,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:59:11,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:59:11,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:59:11,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:59:11,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:59:11,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:59:11,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:59:11,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:59:11,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:59:11,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:59:11,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:59:11,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:59:11,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:59:11,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:59:11,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:59:11,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:59:11,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:59:11,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:59:11,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:59:11,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:59:12,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:59:12,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:59:12,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:59:12,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:59:12,043 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:59:12,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:59:12,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:59:12,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:59:12,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:59:12,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:59:12,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:59:12,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:59:12,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:59:12,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:59:12,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:59:12,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:59:12,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:59:12,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:59:12,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:59:12,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:59:12,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:59:12,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:59:12,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:59:12,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:59:12,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:59:12,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:59:12,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:59:12,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:59:12,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:59:12,052 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_6af97173-eb83-48ef-a549-e5542f43dbfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-29 18:59:12,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:59:12,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:59:12,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:59:12,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:59:12,488 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:59:12,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-29 18:59:12,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/85b8ba2af/de9d1c9543aa4fbf9c176527c47f84fd/FLAGb94e4c496 [2020-11-29 18:59:13,252 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:59:13,255 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-29 18:59:13,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/85b8ba2af/de9d1c9543aa4fbf9c176527c47f84fd/FLAGb94e4c496 [2020-11-29 18:59:13,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/85b8ba2af/de9d1c9543aa4fbf9c176527c47f84fd [2020-11-29 18:59:13,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:59:13,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:59:13,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:59:13,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:59:13,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:59:13,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:13,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a4f3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13, skipping insertion in model container [2020-11-29 18:59:13,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:13,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:59:13,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:59:13,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:59:13,943 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:59:13,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:59:13,994 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:59:13,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13 WrapperNode [2020-11-29 18:59:13,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:59:13,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:59:13,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:59:13,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:59:14,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:59:14,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:59:14,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:59:14,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:59:14,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... [2020-11-29 18:59:14,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:59:14,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:59:14,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:59:14,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:59:14,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:59:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:59:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:59:14,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 18:59:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:59:14,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:59:14,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:59:14,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:59:15,014 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:59:15,015 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 18:59:15,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:15 BoogieIcfgContainer [2020-11-29 18:59:15,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:59:15,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:59:15,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:59:15,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:59:15,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:59:13" (1/3) ... [2020-11-29 18:59:15,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a3368f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:59:15, skipping insertion in model container [2020-11-29 18:59:15,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:13" (2/3) ... [2020-11-29 18:59:15,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a3368f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:59:15, skipping insertion in model container [2020-11-29 18:59:15,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:15" (3/3) ... [2020-11-29 18:59:15,031 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-29 18:59:15,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:59:15,051 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:59:15,067 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:59:15,100 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:59:15,100 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:59:15,100 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:59:15,101 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:59:15,101 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:59:15,101 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:59:15,101 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:59:15,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:59:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-29 18:59:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:59:15,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:15,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:15,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:15,135 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-29 18:59:15,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:59:15,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499441911] [2020-11-29 18:59:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:59:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:15,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499441911] [2020-11-29 18:59:15,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:15,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:59:15,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126521262] [2020-11-29 18:59:15,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:59:15,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:59:15,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:59:15,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:59:15,335 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-29 18:59:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:15,358 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-29 18:59:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:59:15,360 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 18:59:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:15,399 INFO L225 Difference]: With dead ends: 55 [2020-11-29 18:59:15,399 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 18:59:15,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:59:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 18:59:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-29 18:59:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 18:59:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-29 18:59:15,472 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-29 18:59:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:15,472 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-29 18:59:15,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:59:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-29 18:59:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:59:15,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:15,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:15,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:59:15,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:15,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:15,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-29 18:59:15,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:59:15,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001575635] [2020-11-29 18:59:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:59:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:15,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001575635] [2020-11-29 18:59:15,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:15,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:59:15,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003353457] [2020-11-29 18:59:15,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:59:15,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:59:15,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:59:15,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:59:15,593 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-29 18:59:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:15,731 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-29 18:59:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:59:15,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 18:59:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:15,735 INFO L225 Difference]: With dead ends: 41 [2020-11-29 18:59:15,735 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 18:59:15,736 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 [2020-11-29 18:59:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 18:59:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-29 18:59:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:59:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 18:59:15,754 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-29 18:59:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:15,755 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 18:59:15,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:59:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 18:59:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 18:59:15,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:15,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:15,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:59:15,760 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:15,762 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-29 18:59:15,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:59:15,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886726989] [2020-11-29 18:59:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:59:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:15,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886726989] [2020-11-29 18:59:15,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:15,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:59:15,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274412295] [2020-11-29 18:59:15,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:59:15,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:59:15,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:59:15,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:59:15,895 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 18:59:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:15,988 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-29 18:59:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:59:15,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 18:59:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:15,991 INFO L225 Difference]: With dead ends: 43 [2020-11-29 18:59:15,992 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 18:59:15,992 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 [2020-11-29 18:59:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 18:59:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-29 18:59:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:59:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 18:59:16,000 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-29 18:59:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:16,001 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 18:59:16,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:59:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 18:59:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 18:59:16,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:16,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:16,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:59:16,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-29 18:59:16,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:59:16,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366669829] [2020-11-29 18:59:16,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:59:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:16,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366669829] [2020-11-29 18:59:16,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:16,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:59:16,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41732858] [2020-11-29 18:59:16,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:59:16,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:59:16,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:59:16,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:59:16,166 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 18:59:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:16,271 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-29 18:59:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:59:16,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 18:59:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:16,274 INFO L225 Difference]: With dead ends: 45 [2020-11-29 18:59:16,274 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 18:59:16,275 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 [2020-11-29 18:59:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 18:59:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-29 18:59:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:59:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 18:59:16,282 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-29 18:59:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:16,283 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 18:59:16,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:59:16,284 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 18:59:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:59:16,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:16,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:16,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:59:16,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:16,287 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-29 18:59:16,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:59:16,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460119861] [2020-11-29 18:59:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:59:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:16,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460119861] [2020-11-29 18:59:16,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:16,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:59:16,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010851403] [2020-11-29 18:59:16,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:59:16,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:59:16,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:59:16,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:59:16,405 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 18:59:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:16,523 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-29 18:59:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:59:16,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 18:59:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:16,525 INFO L225 Difference]: With dead ends: 43 [2020-11-29 18:59:16,525 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 18:59:16,526 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 [2020-11-29 18:59:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 18:59:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-29 18:59:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:59:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 18:59:16,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-29 18:59:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:16,534 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 18:59:16,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:59:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 18:59:16,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:59:16,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:16,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:16,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:59:16,536 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:16,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:16,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-29 18:59:16,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:59:16,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927843104] [2020-11-29 18:59:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:59:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:59:16,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:59:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:59:16,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:59:16,690 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:59:16,690 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:59:16,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:59:16,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:59:16 BoogieIcfgContainer [2020-11-29 18:59:16,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:59:16,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:59:16,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:59:16,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:59:16,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:15" (3/4) ... [2020-11-29 18:59:16,749 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:59:16,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:59:16,752 INFO L168 Benchmark]: Toolchain (without parser) took 3147.60 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 86.3 MB in the beginning and 110.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:16,753 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 75.5 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 10.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:59:16,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.92 ms. Allocated memory is still 117.4 MB. Free memory was 86.1 MB in the beginning and 93.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:16,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.72 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 91.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:16,756 INFO L168 Benchmark]: Boogie Preprocessor took 73.29 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 90.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:16,757 INFO L168 Benchmark]: RCFGBuilder took 884.11 ms. Allocated memory is still 117.4 MB. Free memory was 89.6 MB in the beginning and 70.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:16,758 INFO L168 Benchmark]: TraceAbstraction took 1723.32 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 70.3 MB in the beginning and 111.6 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:59:16,758 INFO L168 Benchmark]: Witness Printer took 5.47 ms. Allocated memory is still 142.6 MB. Free memory was 111.6 MB in the beginning and 110.7 MB in the end (delta: 855.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:16,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 75.5 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 10.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 387.92 ms. Allocated memory is still 117.4 MB. Free memory was 86.1 MB in the beginning and 93.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.72 ms. Allocated memory is still 117.4 MB. Free memory was 93.1 MB in the beginning and 91.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.29 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 90.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 884.11 ms. Allocated memory is still 117.4 MB. Free memory was 89.6 MB in the beginning and 70.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1723.32 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 70.3 MB in the beginning and 111.6 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.47 ms. Allocated memory is still 142.6 MB. Free memory was 111.6 MB in the beginning and 110.7 MB in the end (delta: 855.4 kB). Peak memory consumption was 2.1 MB. 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: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s SatisfiabilityAnalysisTime, 0.3s 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-a4ecdab [2020-11-29 18:59:19,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:59:19,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:59:19,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:59:19,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:59:19,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:59:19,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:59:19,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:59:19,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:59:19,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:59:19,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:59:19,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:59:19,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:59:19,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:59:19,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:59:19,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:59:19,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:59:19,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:59:19,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:59:19,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:59:19,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:59:19,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:59:19,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:59:19,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:59:19,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:59:19,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:59:19,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:59:19,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:59:19,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:59:19,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:59:19,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:59:19,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:59:19,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:59:19,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:59:19,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:59:19,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:59:19,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:59:19,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:59:19,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:59:20,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:59:20,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:59:20,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 18:59:20,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:59:20,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:59:20,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:59:20,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:59:20,052 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:59:20,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:59:20,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:59:20,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:59:20,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:59:20,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:59:20,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:59:20,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:59:20,053 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 18:59:20,054 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 18:59:20,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:59:20,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:59:20,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:59:20,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:59:20,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:59:20,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:59:20,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:59:20,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:59:20,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:59:20,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:59:20,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:59:20,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:59:20,057 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 18:59:20,058 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 18:59:20,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:59:20,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:59:20,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 18:59:20,058 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_6af97173-eb83-48ef-a549-e5542f43dbfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-29 18:59:20,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:59:20,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:59:20,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:59:20,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:59:20,585 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:59:20,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-29 18:59:20,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/f932a38da/ebd126561b564ec2830951edd5817506/FLAG263ab8c7d [2020-11-29 18:59:21,314 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:59:21,317 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2020-11-29 18:59:21,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/f932a38da/ebd126561b564ec2830951edd5817506/FLAG263ab8c7d [2020-11-29 18:59:21,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/data/f932a38da/ebd126561b564ec2830951edd5817506 [2020-11-29 18:59:21,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:59:21,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:59:21,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:59:21,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:59:21,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:59:21,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:21,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bfdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21, skipping insertion in model container [2020-11-29 18:59:21,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:21,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:59:21,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:59:21,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:59:21,876 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:59:21,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:59:21,974 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:59:21,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21 WrapperNode [2020-11-29 18:59:21,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:59:21,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:59:21,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:59:21,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:59:21,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:59:22,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:59:22,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:59:22,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:59:22,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... [2020-11-29 18:59:22,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:59:22,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:59:22,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:59:22,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:59:22,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:59:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 18:59:22,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 18:59:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:59:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 18:59:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:59:22,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:59:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:59:23,038 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:59:23,038 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 18:59:23,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:23 BoogieIcfgContainer [2020-11-29 18:59:23,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:59:23,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:59:23,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:59:23,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:59:23,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:59:21" (1/3) ... [2020-11-29 18:59:23,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6544ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:59:23, skipping insertion in model container [2020-11-29 18:59:23,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:59:21" (2/3) ... [2020-11-29 18:59:23,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6544ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:59:23, skipping insertion in model container [2020-11-29 18:59:23,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:23" (3/3) ... [2020-11-29 18:59:23,075 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-29 18:59:23,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:59:23,095 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:59:23,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:59:23,151 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:59:23,151 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:59:23,151 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:59:23,151 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:59:23,151 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:59:23,152 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:59:23,152 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:59:23,152 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:59:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-29 18:59:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:59:23,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:23,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:23,174 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:23,181 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-29 18:59:23,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:59:23,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226164436] [2020-11-29 18:59:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 18:59:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:23,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 18:59:23,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:59:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:23,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:59:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:23,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226164436] [2020-11-29 18:59:23,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:23,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 18:59:23,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445127442] [2020-11-29 18:59:23,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:59:23,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:59:23,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:59:23,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:59:23,394 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-29 18:59:23,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:23,419 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-29 18:59:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:59:23,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 18:59:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:23,434 INFO L225 Difference]: With dead ends: 55 [2020-11-29 18:59:23,435 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 18:59:23,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:59:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 18:59:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-29 18:59:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 18:59:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-29 18:59:23,481 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-29 18:59:23,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:23,482 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-29 18:59:23,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:59:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-29 18:59:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:59:23,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:23,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:23,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 18:59:23,697 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:23,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:23,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-29 18:59:23,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:59:23,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39136786] [2020-11-29 18:59:23,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 18:59:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:23,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 18:59:23,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:59:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:23,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:59:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:23,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39136786] [2020-11-29 18:59:23,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:23,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 18:59:23,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085175678] [2020-11-29 18:59:23,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:59:23,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:59:23,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:59:23,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:59:23,960 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-29 18:59:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:24,157 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-29 18:59:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:59:24,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 18:59:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:24,161 INFO L225 Difference]: With dead ends: 52 [2020-11-29 18:59:24,161 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 18:59:24,163 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 [2020-11-29 18:59:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 18:59:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-29 18:59:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:59:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 18:59:24,181 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-29 18:59:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:24,181 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 18:59:24,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:59:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 18:59:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:59:24,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:24,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:24,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 18:59:24,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:24,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-29 18:59:24,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:59:24,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924715600] [2020-11-29 18:59:24,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 18:59:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:24,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:59:24,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:59:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:24,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:59:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:25,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924715600] [2020-11-29 18:59:25,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:25,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 18:59:25,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453536799] [2020-11-29 18:59:25,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:59:25,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:59:25,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:59:25,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:59:25,059 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-29 18:59:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:25,605 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-29 18:59:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:59:25,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-29 18:59:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:25,623 INFO L225 Difference]: With dead ends: 36 [2020-11-29 18:59:25,623 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 18:59:25,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:59:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 18:59:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-29 18:59:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 18:59:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-29 18:59:25,630 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-29 18:59:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:25,630 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-29 18:59:25,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:59:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-29 18:59:25,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:59:25,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:25,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:25,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 18:59:25,845 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:25,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:25,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-29 18:59:25,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:59:25,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012205875] [2020-11-29 18:59:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 18:59:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:26,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 18:59:26,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:59:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:26,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:59:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:26,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012205875] [2020-11-29 18:59:26,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:26,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 18:59:26,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376443695] [2020-11-29 18:59:26,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:59:26,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:59:26,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:59:26,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:59:26,096 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-29 18:59:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:26,291 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-29 18:59:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:59:26,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 18:59:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:26,294 INFO L225 Difference]: With dead ends: 52 [2020-11-29 18:59:26,294 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 18:59:26,295 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 [2020-11-29 18:59:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 18:59:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-29 18:59:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:59:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-29 18:59:26,302 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-29 18:59:26,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:26,302 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-29 18:59:26,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:59:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-29 18:59:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:59:26,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:26,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:26,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 18:59:26,529 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:26,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:26,530 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-29 18:59:26,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:59:26,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301776572] [2020-11-29 18:59:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 18:59:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:26,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 18:59:26,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:59:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:26,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:59:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:27,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301776572] [2020-11-29 18:59:27,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:27,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-29 18:59:27,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743854688] [2020-11-29 18:59:27,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 18:59:27,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:59:27,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 18:59:27,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-29 18:59:27,216 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-29 18:59:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:27,857 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-29 18:59:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:59:27,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-29 18:59:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:27,866 INFO L225 Difference]: With dead ends: 32 [2020-11-29 18:59:27,867 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 18:59:27,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-29 18:59:27,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 18:59:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 18:59:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 18:59:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-29 18:59:27,872 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-29 18:59:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:27,873 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-29 18:59:27,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 18:59:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-29 18:59:27,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:59:27,879 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:59:27,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:59:28,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 18:59:28,083 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:59:28,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:59:28,084 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-29 18:59:28,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:59:28,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092345165] [2020-11-29 18:59:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/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 [2020-11-29 18:59:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:59:28,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 18:59:28,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:59:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:28,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:59:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:59:28,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092345165] [2020-11-29 18:59:28,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:59:28,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 18:59:28,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150767703] [2020-11-29 18:59:28,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 18:59:28,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:59:28,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 18:59:28,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:59:28,514 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-29 18:59:28,971 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-11-29 18:59:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:59:28,973 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-29 18:59:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:59:28,973 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-29 18:59:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:59:28,974 INFO L225 Difference]: With dead ends: 23 [2020-11-29 18:59:28,974 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:59:28,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:59:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:59:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:59:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:59:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:59:28,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 18:59:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:59:28,976 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:59:28,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 18:59:28,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:59:28,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:59:29,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 18:59:29,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 18:59:29,512 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-29 18:59:29,512 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-29 18:59:29,513 INFO L270 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))) [2020-11-29 18:59:29,513 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 18:59:29,513 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 18:59:29,513 INFO L274 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-11-29 18:59:29,513 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 18:59:29,513 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-11-29 18:59:29,514 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 18:59:29,514 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 18:59:29,514 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 18:59:29,514 INFO L274 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-29 18:59:29,514 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 18:59:29,514 INFO L274 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-11-29 18:59:29,515 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-29 18:59:29,515 INFO L270 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))) [2020-11-29 18:59:29,515 INFO L274 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-11-29 18:59:29,515 INFO L270 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))) [2020-11-29 18:59:29,515 INFO L274 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-11-29 18:59:29,515 INFO L270 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))) [2020-11-29 18:59:29,516 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-29 18:59:29,516 INFO L274 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-11-29 18:59:29,516 INFO L270 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))) [2020-11-29 18:59:29,516 INFO L270 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))) [2020-11-29 18:59:29,516 INFO L277 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2020-11-29 18:59:29,516 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-29 18:59:29,517 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-11-29 18:59:29,517 INFO L274 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-11-29 18:59:29,517 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-11-29 18:59:29,540 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 18:59:29,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 18:59:29,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 18:59:29,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 18:59:29,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:59:29 BoogieIcfgContainer [2020-11-29 18:59:29,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:59:29,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:59:29,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:59:29,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:59:29,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:59:23" (3/4) ... [2020-11-29 18:59:29,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:59:29,580 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 18:59:29,580 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 18:59:29,581 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 18:59:29,581 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:59:29,616 WARN L221 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) [2020-11-29 18:59:29,618 WARN L221 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) [2020-11-29 18:59:29,619 WARN L221 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)) [2020-11-29 18:59:29,681 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6af97173-eb83-48ef-a549-e5542f43dbfb/bin/uautomizer/witness.graphml [2020-11-29 18:59:29,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:59:29,683 INFO L168 Benchmark]: Toolchain (without parser) took 8061.05 ms. Allocated memory was 67.1 MB in the beginning and 96.5 MB in the end (delta: 29.4 MB). Free memory was 50.2 MB in the beginning and 56.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:29,684 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:59:29,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.38 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 39.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:29,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.53 ms. Allocated memory is still 67.1 MB. Free memory was 39.1 MB in the beginning and 50.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:29,686 INFO L168 Benchmark]: Boogie Preprocessor took 103.15 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 49.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:29,686 INFO L168 Benchmark]: RCFGBuilder took 889.92 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 29.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:29,687 INFO L168 Benchmark]: TraceAbstraction took 6485.50 ms. Allocated memory was 67.1 MB in the beginning and 96.5 MB in the end (delta: 29.4 MB). Free memory was 50.5 MB in the beginning and 60.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:29,687 INFO L168 Benchmark]: Witness Printer took 125.28 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 56.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:59:29,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.38 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 39.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.53 ms. Allocated memory is still 67.1 MB. Free memory was 39.1 MB in the beginning and 50.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.15 ms. Allocated memory is still 67.1 MB. Free memory was 50.6 MB in the beginning and 49.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 889.92 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 29.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6485.50 ms. Allocated memory was 67.1 MB in the beginning and 96.5 MB in the end (delta: 29.4 MB). Free memory was 50.5 MB in the beginning and 60.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 125.28 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 56.2 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 [2020-11-29 18:59:29,707 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 18:59:29,707 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 [2020-11-29 18:59:29,708 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 18:59:29,722 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: 6.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.3s 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, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.4s 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...