./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0921.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e3309a0b9ddf6a439ec38f457e14947ace4c70ec ............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e3309a0b9ddf6a439ec38f457e14947ace4c70ec .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:14:43,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:14:43,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:14:43,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:14:43,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:14:43,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:14:43,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:14:43,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:14:43,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:14:43,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:14:43,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:14:43,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:14:43,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:14:43,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:14:43,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:14:43,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:14:43,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:14:43,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:14:43,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:14:43,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:14:43,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:14:43,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:14:43,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:14:43,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:14:43,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:14:43,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:14:43,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:14:43,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:14:43,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:14:43,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:14:43,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:14:43,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:14:43,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:14:43,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:14:43,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:14:43,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:14:43,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:14:43,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:14:43,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:14:43,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:14:43,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:14:43,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:14:43,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:14:43,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:14:43,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:14:43,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:14:43,940 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:14:43,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:14:43,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:14:43,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:14:43,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:14:43,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:14:43,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:14:43,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:14:43,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:14:43,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:14:43,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:14:43,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:14:43,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:14:43,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:14:43,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:14:43,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:14:43,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:14:43,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:14:43,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:14:43,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:14:43,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:14:43,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:14:43,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:14:43,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:14:43,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:14:43,944 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3309a0b9ddf6a439ec38f457e14947ace4c70ec [2020-10-24 23:14:44,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:14:44,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:14:44,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:14:44,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:14:44,467 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:14:44,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-10-24 23:14:44,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc69418c/678327b21a3b4d3185cb328399bea474/FLAGf62e06843 [2020-10-24 23:14:45,154 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:14:45,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-10-24 23:14:45,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc69418c/678327b21a3b4d3185cb328399bea474/FLAGf62e06843 [2020-10-24 23:14:45,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc69418c/678327b21a3b4d3185cb328399bea474 [2020-10-24 23:14:45,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:14:45,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:14:45,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:45,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:14:45,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:14:45,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:45,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b13cdb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45, skipping insertion in model container [2020-10-24 23:14:45,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:45,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:14:45,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:14:45,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:45,792 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:14:45,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:45,900 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:14:45,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45 WrapperNode [2020-10-24 23:14:45,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:45,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:45,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:14:45,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:14:45,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:45,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:46,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:14:46,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:14:46,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:14:46,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... [2020-10-24 23:14:46,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:14:46,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:14:46,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:14:46,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:14:46,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:14:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:14:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:14:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:14:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:14:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:14:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:14:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:14:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:14:46,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:14:46,589 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:14:46,590 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:14:46,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:46 BoogieIcfgContainer [2020-10-24 23:14:46,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:14:46,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:14:46,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:14:46,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:14:46,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:14:45" (1/3) ... [2020-10-24 23:14:46,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0dcc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:46, skipping insertion in model container [2020-10-24 23:14:46,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:45" (2/3) ... [2020-10-24 23:14:46,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0dcc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:46, skipping insertion in model container [2020-10-24 23:14:46,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:46" (3/3) ... [2020-10-24 23:14:46,602 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2020-10-24 23:14:46,615 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:14:46,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:14:46,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:14:46,687 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:14:46,688 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:14:46,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:14:46,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:14:46,689 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:14:46,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:14:46,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:14:46,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:14:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 23:14:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:14:46,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:14:46,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:14:46,713 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:14:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:14:46,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1030195787, now seen corresponding path program 1 times [2020-10-24 23:14:46,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:14:46,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068358302] [2020-10-24 23:14:46,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:14:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:14:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:14:47,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068358302] [2020-10-24 23:14:47,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:14:47,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:14:47,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001591893] [2020-10-24 23:14:47,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:14:47,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:14:47,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:14:47,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:14:47,091 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 23:14:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:14:47,123 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-10-24 23:14:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:14:47,125 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:14:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:14:47,147 INFO L225 Difference]: With dead ends: 57 [2020-10-24 23:14:47,148 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 23:14:47,162 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 [2020-10-24 23:14:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 23:14:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 23:14:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 23:14:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-10-24 23:14:47,196 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 10 [2020-10-24 23:14:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:14:47,196 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-10-24 23:14:47,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:14:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-10-24 23:14:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:14:47,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:14:47,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:14:47,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:14:47,198 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:14:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:14:47,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1305111410, now seen corresponding path program 1 times [2020-10-24 23:14:47,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:14:47,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727168112] [2020-10-24 23:14:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:14:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:14:47,252 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:14:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:14:47,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:14:47,365 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:14:47,366 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:14:47,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:14:47,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:14:47 BoogieIcfgContainer [2020-10-24 23:14:47,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:14:47,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:14:47,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:14:47,452 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:14:47,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:46" (3/4) ... [2020-10-24 23:14:47,457 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:14:47,457 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:14:47,462 INFO L168 Benchmark]: Toolchain (without parser) took 1941.50 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 25.9 MB in the beginning and 25.3 MB in the end (delta: 583.2 kB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:47,463 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 37.7 MB. Free memory was 22.1 MB in the beginning and 22.1 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:14:47,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.44 ms. Allocated memory is still 50.3 MB. Free memory was 25.3 MB in the beginning and 26.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:47,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.93 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:14:47,467 INFO L168 Benchmark]: Boogie Preprocessor took 77.45 ms. Allocated memory is still 50.3 MB. Free memory was 24.5 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:47,468 INFO L168 Benchmark]: RCFGBuilder took 510.65 ms. Allocated memory is still 50.3 MB. Free memory was 22.7 MB in the beginning and 28.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:47,469 INFO L168 Benchmark]: TraceAbstraction took 857.13 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 25.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:47,471 INFO L168 Benchmark]: Witness Printer took 5.67 ms. Allocated memory is still 60.8 MB. Free memory was 25.7 MB in the beginning and 25.3 MB in the end (delta: 323.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:14:47,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 37.7 MB. Free memory was 22.1 MB in the beginning and 22.1 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.44 ms. Allocated memory is still 50.3 MB. Free memory was 25.3 MB in the beginning and 26.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.93 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.45 ms. Allocated memory is still 50.3 MB. Free memory was 24.5 MB in the beginning and 22.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 510.65 ms. Allocated memory is still 50.3 MB. Free memory was 22.7 MB in the beginning and 28.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 857.13 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 25.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.67 ms. Allocated memory is still 60.8 MB. Free memory was 25.7 MB in the beginning and 25.3 MB in the end (delta: 323.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 129, overapproximation of bitwiseOr at line 61, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L137] double x = 0.0 / 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L138] double res = __ieee754_log(x); [L129] return x != x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L141] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0921.c", 3, "reach_error") VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:14:49,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:14:49,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:14:50,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 23:14:50,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:14:50,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:14:50,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:14:50,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:14:50,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:14:50,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:14:50,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:14:50,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:14:50,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:14:50,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:14:50,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:14:50,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:14:50,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 23:14:50,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:14:50,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:14:50,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:14:50,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:14:50,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:14:50,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:14:50,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:14:50,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:14:50,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:14:50,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:14:50,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:14:50,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:14:50,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:14:50,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:14:50,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:14:50,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:14:50,181 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:14:50,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:14:50,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:14:50,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:14:50,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:14:50,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:14:50,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:14:50,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:14:50,182 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:14:50,183 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:14:50,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:14:50,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:14:50,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:14:50,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:14:50,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:14:50,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:14:50,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:14:50,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:14:50,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:14:50,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:14:50,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:14:50,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:14:50,185 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:14:50,185 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:14:50,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:14:50,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:14:50,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:14:50,186 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3309a0b9ddf6a439ec38f457e14947ace4c70ec [2020-10-24 23:14:50,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:14:50,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:14:50,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:14:50,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:14:50,629 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:14:50,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-10-24 23:14:50,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc135c57/c9aa6dc9599944c3b23c21c2b0f381dd/FLAGcb330a22c [2020-10-24 23:14:51,379 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:14:51,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-10-24 23:14:51,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc135c57/c9aa6dc9599944c3b23c21c2b0f381dd/FLAGcb330a22c [2020-10-24 23:14:51,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc135c57/c9aa6dc9599944c3b23c21c2b0f381dd [2020-10-24 23:14:51,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:14:51,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:14:51,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:51,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:14:51,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:14:51,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:51" (1/1) ... [2020-10-24 23:14:51,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cecd930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:51, skipping insertion in model container [2020-10-24 23:14:51,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:51" (1/1) ... [2020-10-24 23:14:51,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:14:51,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:14:51,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:52,002 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:14:52,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:52,099 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:14:52,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52 WrapperNode [2020-10-24 23:14:52,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:52,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:52,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:14:52,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:14:52,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:52,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:14:52,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:14:52,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:14:52,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... [2020-10-24 23:14:52,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:14:52,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:14:52,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:14:52,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:14:52,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:14:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:14:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:14:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:14:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:14:52,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:14:52,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:14:52,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:14:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:14:52,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:15:16,551 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:15:16,551 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:15:16,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:15:16 BoogieIcfgContainer [2020-10-24 23:15:16,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:15:16,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:15:16,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:15:16,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:15:16,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:14:51" (1/3) ... [2020-10-24 23:15:16,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bdf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:15:16, skipping insertion in model container [2020-10-24 23:15:16,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:52" (2/3) ... [2020-10-24 23:15:16,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bdf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:15:16, skipping insertion in model container [2020-10-24 23:15:16,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:15:16" (3/3) ... [2020-10-24 23:15:16,561 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2020-10-24 23:15:16,573 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:15:16,579 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:15:16,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:15:16,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:15:16,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:15:16,614 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:15:16,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:15:16,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:15:16,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:15:16,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:15:16,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:15:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 23:15:16,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:15:16,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:15:16,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:15:16,637 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:15:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:15:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1030195787, now seen corresponding path program 1 times [2020-10-24 23:15:16,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:15:16,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868140777] [2020-10-24 23:15:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:15:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:15:17,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:15:17,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:15:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:15:17,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:15:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:15:17,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868140777] [2020-10-24 23:15:17,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:15:17,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:15:17,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078123228] [2020-10-24 23:15:17,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:15:17,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:15:17,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:15:17,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:15:17,762 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 23:15:17,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:15:17,782 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-10-24 23:15:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:15:17,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:15:17,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:15:17,793 INFO L225 Difference]: With dead ends: 57 [2020-10-24 23:15:17,793 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 23:15:17,797 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 [2020-10-24 23:15:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 23:15:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 23:15:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 23:15:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-10-24 23:15:17,834 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 10 [2020-10-24 23:15:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:15:17,834 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-10-24 23:15:17,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:15:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-10-24 23:15:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:15:17,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:15:17,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:15:18,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:15:18,050 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:15:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:15:18,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1305111410, now seen corresponding path program 1 times [2020-10-24 23:15:18,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:15:18,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495530734] [2020-10-24 23:15:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:15:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:15:19,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 23:15:19,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:15:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:15:19,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:15:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:15:19,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495530734] [2020-10-24 23:15:19,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:15:19,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:15:19,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667664023] [2020-10-24 23:15:19,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:15:19,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:15:19,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:15:19,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:15:19,377 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2020-10-24 23:15:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:15:26,953 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-10-24 23:15:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 23:15:27,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-24 23:15:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:15:27,764 INFO L225 Difference]: With dead ends: 41 [2020-10-24 23:15:27,765 INFO L226 Difference]: Without dead ends: 36 [2020-10-24 23:15:27,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 23:15:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-24 23:15:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-10-24 23:15:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 23:15:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2020-10-24 23:15:27,773 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 11 [2020-10-24 23:15:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:15:27,773 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2020-10-24 23:15:27,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:15:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-10-24 23:15:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:15:27,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:15:27,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:15:27,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:15:27,988 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:15:27,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:15:27,990 INFO L82 PathProgramCache]: Analyzing trace with hash -594923761, now seen corresponding path program 1 times [2020-10-24 23:15:27,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:15:27,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118118467] [2020-10-24 23:15:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:15:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:15:28,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-24 23:15:28,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:15:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:15:28,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:15:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:15:29,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118118467] [2020-10-24 23:15:29,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:15:29,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-24 23:15:29,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221595085] [2020-10-24 23:15:29,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 23:15:29,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:15:29,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 23:15:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:15:29,308 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 10 states. [2020-10-24 23:16:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:16,798 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-10-24 23:16:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 23:16:16,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-10-24 23:16:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:16,805 INFO L225 Difference]: With dead ends: 36 [2020-10-24 23:16:16,805 INFO L226 Difference]: Without dead ends: 31 [2020-10-24 23:16:16,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-24 23:16:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-24 23:16:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-10-24 23:16:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 23:16:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-24 23:16:16,821 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2020-10-24 23:16:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:16,822 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-24 23:16:16,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 23:16:16,822 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-24 23:16:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-24 23:16:16,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:16,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:17,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:16:17,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:17,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:17,039 INFO L82 PathProgramCache]: Analyzing trace with hash 464451163, now seen corresponding path program 1 times [2020-10-24 23:16:17,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:17,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062138803] [2020-10-24 23:16:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:16:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:17,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 23:16:17,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:17,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:21,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062138803] [2020-10-24 23:16:21,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:21,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 23:16:21,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857061730] [2020-10-24 23:16:21,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 23:16:21,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:21,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 23:16:21,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=35, Unknown=2, NotChecked=0, Total=56 [2020-10-24 23:16:21,616 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-10-24 23:16:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:26,289 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-10-24 23:16:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 23:16:27,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-24 23:16:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:27,148 INFO L225 Difference]: With dead ends: 47 [2020-10-24 23:16:27,148 INFO L226 Difference]: Without dead ends: 31 [2020-10-24 23:16:27,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=41, Invalid=67, Unknown=2, NotChecked=0, Total=110 [2020-10-24 23:16:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-24 23:16:27,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-10-24 23:16:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 23:16:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-24 23:16:27,154 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 17 [2020-10-24 23:16:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:27,154 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-24 23:16:27,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 23:16:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-24 23:16:27,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-24 23:16:27,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:27,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:27,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 23:16:27,357 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash -2124593878, now seen corresponding path program 1 times [2020-10-24 23:16:27,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:27,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355726234] [2020-10-24 23:16:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:16:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:27,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 23:16:27,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:27,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:28,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355726234] [2020-10-24 23:16:28,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:28,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 23:16:28,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293521638] [2020-10-24 23:16:28,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 23:16:28,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:28,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 23:16:28,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:16:28,069 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 8 states. [2020-10-24 23:16:28,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:28,272 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-10-24 23:16:28,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 23:16:28,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-24 23:16:28,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:28,273 INFO L225 Difference]: With dead ends: 26 [2020-10-24 23:16:28,273 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 23:16:28,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:16:28,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 23:16:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 23:16:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 23:16:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 23:16:28,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-24 23:16:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:28,275 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 23:16:28,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 23:16:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 23:16:28,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 23:16:28,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 23:16:28,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 23:16:28,624 INFO L274 CegarLoopResult]: For program point L60(lines 60 72) no Hoare annotation was computed. [2020-10-24 23:16:28,624 INFO L274 CegarLoopResult]: For program point L60-1(lines 47 126) no Hoare annotation was computed. [2020-10-24 23:16:28,624 INFO L274 CegarLoopResult]: For program point L52-1(lines 52 57) no Hoare annotation was computed. [2020-10-24 23:16:28,625 INFO L270 CegarLoopResult]: At program point L52-2(lines 52 57) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log_~x))) [2020-10-24 23:16:28,625 INFO L274 CegarLoopResult]: For program point L52-3(lines 52 57) no Hoare annotation was computed. [2020-10-24 23:16:28,625 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 23:16:28,625 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 23:16:28,625 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 23:16:28,625 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 23:16:28,625 INFO L274 CegarLoopResult]: For program point L61(lines 61 62) no Hoare annotation was computed. [2020-10-24 23:16:28,625 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 23:16:28,626 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 23:16:28,626 INFO L274 CegarLoopResult]: For program point L86(lines 86 102) no Hoare annotation was computed. [2020-10-24 23:16:28,626 INFO L274 CegarLoopResult]: For program point L115(lines 115 119) no Hoare annotation was computed. [2020-10-24 23:16:28,626 INFO L274 CegarLoopResult]: For program point L78-1(lines 78 83) no Hoare annotation was computed. [2020-10-24 23:16:28,626 INFO L270 CegarLoopResult]: At program point L78-2(lines 78 83) the Hoare annotation is: false [2020-10-24 23:16:28,626 INFO L274 CegarLoopResult]: For program point L78-3(lines 78 83) no Hoare annotation was computed. [2020-10-24 23:16:28,626 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 23:16:28,627 INFO L270 CegarLoopResult]: At program point L124(lines 47 126) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start___ieee754_log_#res|)) [2020-10-24 23:16:28,627 INFO L274 CegarLoopResult]: For program point L87(lines 87 94) no Hoare annotation was computed. [2020-10-24 23:16:28,627 INFO L274 CegarLoopResult]: For program point L141(lines 141 144) no Hoare annotation was computed. [2020-10-24 23:16:28,627 INFO L274 CegarLoopResult]: For program point L67-1(lines 67 71) no Hoare annotation was computed. [2020-10-24 23:16:28,627 INFO L270 CegarLoopResult]: At program point L67-2(lines 67 71) the Hoare annotation is: false [2020-10-24 23:16:28,627 INFO L270 CegarLoopResult]: At program point L129(line 129) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log_~x) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start___ieee754_log_#res|)) [2020-10-24 23:16:28,627 INFO L274 CegarLoopResult]: For program point L96(lines 96 101) no Hoare annotation was computed. [2020-10-24 23:16:28,627 INFO L274 CegarLoopResult]: For program point L63(lines 63 64) no Hoare annotation was computed. [2020-10-24 23:16:28,627 INFO L274 CegarLoopResult]: For program point L121(lines 121 124) no Hoare annotation was computed. [2020-10-24 23:16:28,628 INFO L274 CegarLoopResult]: For program point L88(lines 88 93) no Hoare annotation was computed. [2020-10-24 23:16:28,628 INFO L277 CegarLoopResult]: At program point L146(lines 131 147) the Hoare annotation is: true [2020-10-24 23:16:28,628 INFO L274 CegarLoopResult]: For program point L113(lines 113 125) no Hoare annotation was computed. [2020-10-24 23:16:28,638 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,639 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,639 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,639 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,641 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,642 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,644 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,644 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,645 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,645 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,645 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,647 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,647 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,647 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,647 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,647 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,647 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,648 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,648 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,648 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,648 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,649 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,650 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,650 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-24 23:16:28,650 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,651 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,651 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-24 23:16:28,651 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:28 BoogieIcfgContainer [2020-10-24 23:16:28,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:28,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:28,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:28,654 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:28,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:15:16" (3/4) ... [2020-10-24 23:16:28,658 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 23:16:28,671 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-24 23:16:28,671 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-24 23:16:28,672 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 23:16:28,672 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 23:16:28,701 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-10-24 23:16:28,702 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-10-24 23:16:28,702 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-10-24 23:16:28,746 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:16:28,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:28,749 INFO L168 Benchmark]: Toolchain (without parser) took 97065.53 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.9 MB in the beginning and 32.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,750 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:28,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.55 ms. Allocated memory is still 52.4 MB. Free memory was 28.3 MB in the beginning and 26.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.21 ms. Allocated memory is still 52.4 MB. Free memory was 26.2 MB in the beginning and 24.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,751 INFO L168 Benchmark]: Boogie Preprocessor took 99.54 ms. Allocated memory is still 52.4 MB. Free memory was 24.2 MB in the beginning and 35.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,752 INFO L168 Benchmark]: RCFGBuilder took 24245.88 ms. Allocated memory is still 52.4 MB. Free memory was 35.8 MB in the beginning and 25.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,753 INFO L168 Benchmark]: TraceAbstraction took 72098.40 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 37.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,753 INFO L168 Benchmark]: Witness Printer took 92.98 ms. Allocated memory is still 62.9 MB. Free memory was 37.3 MB in the beginning and 32.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 411.55 ms. Allocated memory is still 52.4 MB. Free memory was 28.3 MB in the beginning and 26.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.21 ms. Allocated memory is still 52.4 MB. Free memory was 26.2 MB in the beginning and 24.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.54 ms. Allocated memory is still 52.4 MB. Free memory was 24.2 MB in the beginning and 35.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 24245.88 ms. Allocated memory is still 52.4 MB. Free memory was 35.8 MB in the beginning and 25.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 72098.40 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 37.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Witness Printer took 92.98 ms. Allocated memory is still 62.9 MB. Free memory was 37.3 MB in the beginning and 32.2 MB in the end (delta: 5.2 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 Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 129]: Loop Invariant [2020-10-24 23:16:28,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,766 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,767 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,767 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,767 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,767 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,767 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant [2020-10-24 23:16:28,768 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,769 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,769 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,769 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,769 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,769 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,770 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,770 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,770 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,770 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,770 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,770 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant [2020-10-24 23:16:28,771 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,771 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-24 23:16:28,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-24 23:16:28,772 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-24 23:16:28,772 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-10-24 23:16:28,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 71.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 61.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 118 SDslu, 292 SDs, 0 SdLazy, 128 SolverSat, 22 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 56.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 23 QuantifiedInterpolants, 9392 SizeOfPredicates, 31 NumberOfNonLiveVariables, 343 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...