./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1252a.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_1252a.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 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1252a.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 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:17:17,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:17:17,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:17:17,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:17:17,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:17:17,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:17:17,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:17:17,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:17:17,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:17:17,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:17:17,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:17:17,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:17:17,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:17:17,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:17:17,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:17:17,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:17:17,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:17:17,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:17:17,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:17:17,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:17:17,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:17:17,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:17:17,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:17:17,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:17:17,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:17:17,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:17:17,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:17:17,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:17:17,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:17:17,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:17:17,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:17:17,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:17:17,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:17:17,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:17:17,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:17:17,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:17:17,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:17:17,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:17:17,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:17:17,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:17:17,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:17:17,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:17:17,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:17:17,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:17:17,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:17:17,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:17:17,896 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:17:17,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:17:17,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:17:17,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:17:17,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:17:17,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:17:17,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:17:17,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:17:17,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:17:17,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:17:17,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:17:17,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:17:17,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:17:17,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:17:17,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:17:17,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:17:17,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:17:17,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:17,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:17:17,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:17:17,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:17:17,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:17:17,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:17:17,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:17:17,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:17:17,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 [2020-10-24 23:17:18,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:17:18,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:17:18,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:17:18,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:17:18,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:17:18,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2020-10-24 23:17:18,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c64f9d0bf/eef9ea5dc0f444ba8f57a75b419fe211/FLAG561d05aaf [2020-10-24 23:17:19,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:17:19,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2020-10-24 23:17:19,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c64f9d0bf/eef9ea5dc0f444ba8f57a75b419fe211/FLAG561d05aaf [2020-10-24 23:17:19,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c64f9d0bf/eef9ea5dc0f444ba8f57a75b419fe211 [2020-10-24 23:17:19,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:17:19,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:17:19,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:19,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:17:19,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:17:19,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2b713b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19, skipping insertion in model container [2020-10-24 23:17:19,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:17:19,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:17:19,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:19,840 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:17:19,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:19,892 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:17:19,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19 WrapperNode [2020-10-24 23:17:19,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:19,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:19,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:17:19,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:17:19,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:19,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:17:19,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:17:19,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:17:19,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (1/1) ... [2020-10-24 23:17:19,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:17:19,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:17:19,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:17:19,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:17:19,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (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 23:17:20,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:17:20,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:17:20,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:17:20,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:17:20,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:17:20,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:17:20,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:20,812 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:20,812 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 23:17:20,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:20 BoogieIcfgContainer [2020-10-24 23:17:20,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:20,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:20,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:20,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:20,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:19" (1/3) ... [2020-10-24 23:17:20,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94be139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:20, skipping insertion in model container [2020-10-24 23:17:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:19" (2/3) ... [2020-10-24 23:17:20,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94be139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:20, skipping insertion in model container [2020-10-24 23:17:20,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:20" (3/3) ... [2020-10-24 23:17:20,824 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-10-24 23:17:20,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:20,843 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:20,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:20,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:20,887 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:20,888 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:20,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:20,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:20,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:20,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:20,888 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 23:17:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:17:20,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:20,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:20,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:20,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:20,921 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 23:17:20,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:20,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460789860] [2020-10-24 23:17:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:21,088 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 23:17:21,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460789860] [2020-10-24 23:17:21,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:21,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:17:21,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202768756] [2020-10-24 23:17:21,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:21,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:21,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:21,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:21,117 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 23:17:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:21,140 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 23:17:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:21,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:17:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:21,154 INFO L225 Difference]: With dead ends: 63 [2020-10-24 23:17:21,154 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 23:17:21,158 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 23:17:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 23:17:21,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 23:17:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 23:17:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 23:17:21,201 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 23:17:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:21,201 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 23:17:21,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 23:17:21,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:17:21,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:21,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:21,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:17:21,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:21,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 23:17:21,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:21,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211361893] [2020-10-24 23:17:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:21,355 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 23:17:21,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211361893] [2020-10-24 23:17:21,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:21,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:21,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978613566] [2020-10-24 23:17:21,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:21,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:21,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:21,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:21,360 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-10-24 23:17:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:21,426 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-24 23:17:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:21,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-24 23:17:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:21,429 INFO L225 Difference]: With dead ends: 53 [2020-10-24 23:17:21,429 INFO L226 Difference]: Without dead ends: 44 [2020-10-24 23:17:21,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-24 23:17:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-10-24 23:17:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:21,437 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 23:17:21,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:21,438 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:21,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:17:21,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:21,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:21,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:17:21,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-10-24 23:17:21,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:21,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718051586] [2020-10-24 23:17:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:21,561 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 23:17:21,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718051586] [2020-10-24 23:17:21,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:21,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:21,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629784290] [2020-10-24 23:17:21,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:21,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:21,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:21,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:21,570 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 23:17:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:21,628 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 23:17:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:21,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-24 23:17:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:21,630 INFO L225 Difference]: With dead ends: 55 [2020-10-24 23:17:21,630 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 23:17:21,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 23:17:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 23:17:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:21,650 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-10-24 23:17:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:21,651 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:21,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:17:21,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:21,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:21,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 23:17:21,655 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:21,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:21,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-10-24 23:17:21,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:21,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886747951] [2020-10-24 23:17:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:21,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886747951] [2020-10-24 23:17:21,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:21,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:21,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607408660] [2020-10-24 23:17:21,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:21,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:21,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:21,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:21,757 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 23:17:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:21,817 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-10-24 23:17:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:21,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-24 23:17:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:21,820 INFO L225 Difference]: With dead ends: 57 [2020-10-24 23:17:21,820 INFO L226 Difference]: Without dead ends: 48 [2020-10-24 23:17:21,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:21,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-24 23:17:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-10-24 23:17:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:21,827 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-10-24 23:17:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:21,828 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:21,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:21,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:21,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:21,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 23:17:21,830 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:21,831 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-10-24 23:17:21,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:21,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305192264] [2020-10-24 23:17:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:21,921 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 23:17:21,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305192264] [2020-10-24 23:17:21,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:21,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:17:21,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424761900] [2020-10-24 23:17:21,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:21,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:17:21,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:21,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:21,924 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 23:17:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:22,073 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 23:17:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:22,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-24 23:17:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:22,075 INFO L225 Difference]: With dead ends: 55 [2020-10-24 23:17:22,075 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 23:17:22,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:17:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 23:17:22,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 23:17:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:22,082 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-10-24 23:17:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:22,083 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:22,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:22,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:22,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:22,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 23:17:22,084 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 23:17:22,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:17:22,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497400918] [2020-10-24 23:17:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:17:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:22,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:22,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:22,172 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:17:22,172 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:22,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 23:17:22,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:22 BoogieIcfgContainer [2020-10-24 23:17:22,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:22,219 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:22,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:22,219 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:22,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:20" (3/4) ... [2020-10-24 23:17:22,224 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:17:22,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:22,228 INFO L168 Benchmark]: Toolchain (without parser) took 2703.17 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 17.6 MB in the beginning and 32.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:22,231 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 39.8 MB. Free memory was 22.5 MB in the beginning and 22.4 MB in the end (delta: 35.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:22,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.39 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 17.0 MB in the beginning and 24.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:22,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.56 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:22,241 INFO L168 Benchmark]: Boogie Preprocessor took 33.35 ms. Allocated memory is still 48.2 MB. Free memory was 22.5 MB in the beginning and 21.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:22,241 INFO L168 Benchmark]: RCFGBuilder took 838.60 ms. Allocated memory is still 48.2 MB. Free memory was 20.8 MB in the beginning and 25.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:22,243 INFO L168 Benchmark]: TraceAbstraction took 1401.86 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 32.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:22,246 INFO L168 Benchmark]: Witness Printer took 4.94 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 32.2 MB in the end (delta: 395.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:22,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 39.8 MB. Free memory was 22.5 MB in the beginning and 22.4 MB in the end (delta: 35.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.39 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 17.0 MB in the beginning and 24.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.56 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.35 ms. Allocated memory is still 48.2 MB. Free memory was 22.5 MB in the beginning and 21.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 838.60 ms. Allocated memory is still 48.2 MB. Free memory was 20.8 MB in the beginning and 25.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1401.86 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.2 MB in the beginning and 32.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.94 ms. Allocated memory is still 58.7 MB. Free memory was 32.5 MB in the beginning and 32.2 MB in the end (delta: 395.2 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 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:17:24,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:17:24,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:17:24,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:17:24,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:17:24,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:17:24,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:17:24,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:17:24,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:17:24,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:17:24,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:17:24,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:17:24,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:17:24,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:17:24,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:17:25,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:17:25,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:17:25,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:17:25,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:17:25,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:17:25,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:17:25,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:17:25,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:17:25,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:17:25,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:17:25,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:17:25,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:17:25,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:17:25,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:17:25,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:17:25,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:17:25,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:17:25,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:17:25,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:17:25,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:17:25,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:17:25,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:17:25,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:17:25,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:17:25,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:17:25,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:17:25,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:17:25,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:17:25,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:17:25,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:17:25,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:17:25,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:17:25,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:17:25,115 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:17:25,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:17:25,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:17:25,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:17:25,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:17:25,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:17:25,117 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:17:25,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:17:25,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:17:25,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:17:25,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:17:25,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:17:25,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:17:25,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:17:25,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:17:25,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:17:25,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:17:25,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:17:25,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:17:25,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:17:25,120 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:17:25,121 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:17:25,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:17:25,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:17:25,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:17:25,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 [2020-10-24 23:17:25,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:17:25,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:17:25,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:17:25,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:17:25,579 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:17:25,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2020-10-24 23:17:25,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c787e8f/8ab3f588e56f4808946fed392af5a716/FLAG5dadd1ed2 [2020-10-24 23:17:26,400 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:17:26,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2020-10-24 23:17:26,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c787e8f/8ab3f588e56f4808946fed392af5a716/FLAG5dadd1ed2 [2020-10-24 23:17:26,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c787e8f/8ab3f588e56f4808946fed392af5a716 [2020-10-24 23:17:26,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:17:26,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:17:26,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:26,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:17:26,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:17:26,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:26" (1/1) ... [2020-10-24 23:17:26,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7e44a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:26, skipping insertion in model container [2020-10-24 23:17:26,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:17:26" (1/1) ... [2020-10-24 23:17:26,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:17:26,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:17:26,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:26,983 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:17:27,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:17:27,055 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:17:27,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27 WrapperNode [2020-10-24 23:17:27,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:17:27,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:27,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:17:27,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:17:27,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:17:27,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:17:27,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:17:27,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:17:27,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (1/1) ... [2020-10-24 23:17:27,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:17:27,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:17:27,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:17:27,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:17:27,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (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 23:17:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:17:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:17:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:17:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:17:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:17:27,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:17:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:28,113 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:28,113 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 23:17:28,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:28 BoogieIcfgContainer [2020-10-24 23:17:28,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:28,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:28,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:28,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:28,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:17:26" (1/3) ... [2020-10-24 23:17:28,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66367caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:28, skipping insertion in model container [2020-10-24 23:17:28,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:17:27" (2/3) ... [2020-10-24 23:17:28,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66367caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:28, skipping insertion in model container [2020-10-24 23:17:28,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:28" (3/3) ... [2020-10-24 23:17:28,127 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-10-24 23:17:28,141 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:28,148 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:28,163 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:28,203 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:28,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:28,203 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:28,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:28,204 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:28,204 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:28,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:28,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 23:17:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:17:28,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:28,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:28,226 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 23:17:28,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:28,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904539802] [2020-10-24 23:17:28,247 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 23:17:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:28,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:17:28,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:28,411 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 23:17:28,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:28,416 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 23:17:28,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904539802] [2020-10-24 23:17:28,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:28,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:17:28,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381812535] [2020-10-24 23:17:28,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:28,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:28,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:28,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:28,455 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 23:17:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:28,487 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 23:17:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:28,489 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:17:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:28,506 INFO L225 Difference]: With dead ends: 63 [2020-10-24 23:17:28,506 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 23:17:28,511 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 23:17:28,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 23:17:28,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 23:17:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 23:17:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 23:17:28,562 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 23:17:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:28,562 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 23:17:28,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 23:17:28,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:17:28,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:28,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:28,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:17:28,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:28,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 23:17:28,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:28,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132256223] [2020-10-24 23:17:28,778 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 23:17:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:28,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:17:28,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:28,964 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 23:17:28,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:28,997 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 23:17:28,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132256223] [2020-10-24 23:17:28,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:28,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:17:28,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133759323] [2020-10-24 23:17:29,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:17:29,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:17:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:17:29,002 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-10-24 23:17:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:29,172 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-24 23:17:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:17:29,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-24 23:17:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:29,175 INFO L225 Difference]: With dead ends: 68 [2020-10-24 23:17:29,175 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 23:17:29,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:17:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 23:17:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-10-24 23:17:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 23:17:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 23:17:29,185 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 23:17:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:29,185 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 23:17:29,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:17:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 23:17:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:17:29,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:29,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:29,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:17:29,402 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:29,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 23:17:29,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:29,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539400069] [2020-10-24 23:17:29,405 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 23:17:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:29,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 23:17:29,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:29,625 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 23:17:29,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:29,653 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 23:17:29,725 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 23:17:29,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539400069] [2020-10-24 23:17:29,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:29,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:17:29,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95302078] [2020-10-24 23:17:29,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:17:29,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:29,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:17:29,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:17:29,729 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-10-24 23:17:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:29,907 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-10-24 23:17:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:17:29,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-24 23:17:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:29,910 INFO L225 Difference]: With dead ends: 52 [2020-10-24 23:17:29,910 INFO L226 Difference]: Without dead ends: 28 [2020-10-24 23:17:29,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 23:17:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-24 23:17:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-24 23:17:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 23:17:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-10-24 23:17:29,917 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-10-24 23:17:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:29,917 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-10-24 23:17:29,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:17:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-10-24 23:17:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:17:29,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:29,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:30,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:17:30,134 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:30,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-10-24 23:17:30,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:30,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889387524] [2020-10-24 23:17:30,137 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 23:17:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:30,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:17:30,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:30,309 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 23:17:30,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:30,344 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 23:17:30,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889387524] [2020-10-24 23:17:30,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:30,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:17:30,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519062268] [2020-10-24 23:17:30,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:17:30,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:30,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:17:30,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:17:30,349 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-10-24 23:17:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:30,545 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-24 23:17:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:17:30,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-24 23:17:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:30,548 INFO L225 Difference]: With dead ends: 65 [2020-10-24 23:17:30,548 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 23:17:30,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:17:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 23:17:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-10-24 23:17:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 23:17:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-24 23:17:30,555 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-10-24 23:17:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:30,555 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-24 23:17:30,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:17:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-24 23:17:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 23:17:30,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:30,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:30,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 23:17:30,773 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:30,774 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-10-24 23:17:30,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:30,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108072521] [2020-10-24 23:17:30,775 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 23:17:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:30,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 23:17:30,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:30,953 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 23:17:30,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:31,021 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 23:17:31,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108072521] [2020-10-24 23:17:31,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:31,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 23:17:31,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702435586] [2020-10-24 23:17:31,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:17:31,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:31,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:17:31,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:31,024 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-10-24 23:17:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:31,043 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-10-24 23:17:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:17:31,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-24 23:17:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:31,045 INFO L225 Difference]: With dead ends: 40 [2020-10-24 23:17:31,045 INFO L226 Difference]: Without dead ends: 30 [2020-10-24 23:17:31,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:17:31,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-24 23:17:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-24 23:17:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 23:17:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-24 23:17:31,054 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-10-24 23:17:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:31,054 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-24 23:17:31,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:17:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-24 23:17:31,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 23:17:31,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:31,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:31,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 23:17:31,268 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:31,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-10-24 23:17:31,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:31,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655771559] [2020-10-24 23:17:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:31,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 23:17:31,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:31,497 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 23:17:31,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:31,571 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 23:17:31,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655771559] [2020-10-24 23:17:31,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:31,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-24 23:17:31,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856850452] [2020-10-24 23:17:31,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 23:17:31,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:31,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 23:17:31,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 23:17:31,574 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-10-24 23:17:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:31,723 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-24 23:17:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 23:17:31,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-24 23:17:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:31,725 INFO L225 Difference]: With dead ends: 42 [2020-10-24 23:17:31,725 INFO L226 Difference]: Without dead ends: 39 [2020-10-24 23:17:31,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 23:17:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-24 23:17:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-24 23:17:31,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-24 23:17:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-24 23:17:31,739 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-10-24 23:17:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:31,740 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-24 23:17:31,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 23:17:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-24 23:17:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-24 23:17:31,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:31,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:31,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-24 23:17:31,955 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:31,956 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-10-24 23:17:31,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:31,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680687127] [2020-10-24 23:17:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:32,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 23:17:32,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:32,179 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 23:17:32,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:32,273 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 23:17:32,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680687127] [2020-10-24 23:17:32,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:32,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 23:17:32,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198137962] [2020-10-24 23:17:32,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 23:17:32,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:32,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 23:17:32,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:17:32,277 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-10-24 23:17:32,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:32,439 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-24 23:17:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 23:17:32,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-24 23:17:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:32,441 INFO L225 Difference]: With dead ends: 45 [2020-10-24 23:17:32,441 INFO L226 Difference]: Without dead ends: 27 [2020-10-24 23:17:32,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:17:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-24 23:17:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-24 23:17:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-24 23:17:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-24 23:17:32,448 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-10-24 23:17:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:32,448 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-24 23:17:32,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 23:17:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-24 23:17:32,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 23:17:32,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:32,450 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, 1] [2020-10-24 23:17:32,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-24 23:17:32,665 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:32,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-10-24 23:17:32,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:32,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014032554] [2020-10-24 23:17:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:32,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 23:17:32,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:32,978 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:17:33,031 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 23:17:33,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:33,435 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 23:17:33,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014032554] [2020-10-24 23:17:33,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:33,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2020-10-24 23:17:33,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826457760] [2020-10-24 23:17:33,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 23:17:33,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:33,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 23:17:33,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-24 23:17:33,440 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 16 states. [2020-10-24 23:17:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:33,788 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-24 23:17:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 23:17:33,788 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-10-24 23:17:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:33,789 INFO L225 Difference]: With dead ends: 27 [2020-10-24 23:17:33,789 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 23:17:33,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-10-24 23:17:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 23:17:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 23:17:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 23:17:33,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 23:17:33,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-24 23:17:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:33,796 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 23:17:33,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 23:17:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 23:17:33,797 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 23:17:33,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-24 23:17:34,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 23:17:34,429 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 23:17:34,429 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 23:17:34,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 23:17:34,429 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 23:17:34,429 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 33) no Hoare annotation was computed. [2020-10-24 23:17:34,430 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y) (= ULTIMATE.start___fpclassify_double_~x .cse0) (= .cse0 ULTIMATE.start_fmax_double_~x))) [2020-10-24 23:17:34,430 INFO L274 CegarLoopResult]: For program point L28-3(lines 25 50) no Hoare annotation was computed. [2020-10-24 23:17:34,430 INFO L274 CegarLoopResult]: For program point L28-5(lines 28 33) no Hoare annotation was computed. [2020-10-24 23:17:34,430 INFO L270 CegarLoopResult]: At program point L28-6(lines 28 33) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x)) [2020-10-24 23:17:34,430 INFO L274 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L28-7(lines 25 50) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L86-2(lines 86 89) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L45(lines 45 49) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L45-1(lines 45 49) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L54(lines 54 55) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L270 CegarLoopResult]: At program point L71(lines 62 72) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) |ULTIMATE.start_main_#t~short18| (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y) (exists ((v_skolemized_v_prenex_5_3 (_ BitVec 64))) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_5_3) ((_ extract 62 52) v_skolemized_v_prenex_5_3) ((_ extract 51 0) v_skolemized_v_prenex_5_3)) (_ +zero 11 53)) (= ULTIMATE.start___signbit_double_~msw~1 ((_ extract 63 32) v_skolemized_v_prenex_5_3)))) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (= ULTIMATE.start___signbit_double_~x (_ +zero 11 53))) [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 49) no Hoare annotation was computed. [2020-10-24 23:17:34,431 INFO L274 CegarLoopResult]: For program point L56(lines 56 57) no Hoare annotation was computed. [2020-10-24 23:17:34,432 INFO L274 CegarLoopResult]: For program point L65-1(lines 65 69) no Hoare annotation was computed. [2020-10-24 23:17:34,432 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 23:17:34,432 INFO L270 CegarLoopResult]: At program point L65-2(lines 65 69) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) |ULTIMATE.start_main_#t~short18| (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (= ULTIMATE.start___signbit_double_~x (_ +zero 11 53))) [2020-10-24 23:17:34,432 INFO L274 CegarLoopResult]: For program point L65-3(lines 65 69) no Hoare annotation was computed. [2020-10-24 23:17:34,432 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 23:17:34,433 INFO L270 CegarLoopResult]: At program point L49(lines 25 50) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (exists ((v_skolemized_v_prenex_1_3 (_ BitVec 64))) (and (= ((_ extract 63 32) v_skolemized_v_prenex_1_3) ULTIMATE.start___fpclassify_double_~msw~0) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_1_3) ((_ extract 62 52) v_skolemized_v_prenex_1_3) ((_ extract 51 0) v_skolemized_v_prenex_1_3)) (fp.neg (_ +zero 11 53))))) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y) (= ULTIMATE.start___fpclassify_double_~x .cse0) (= .cse0 ULTIMATE.start_fmax_double_~x) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)))) [2020-10-24 23:17:34,433 INFO L270 CegarLoopResult]: At program point L49-1(lines 25 50) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))) [2020-10-24 23:17:34,433 INFO L274 CegarLoopResult]: For program point L41(lines 41 49) no Hoare annotation was computed. [2020-10-24 23:17:34,433 INFO L274 CegarLoopResult]: For program point L41-1(lines 41 49) no Hoare annotation was computed. [2020-10-24 23:17:34,433 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 23:17:34,433 INFO L277 CegarLoopResult]: At program point L91(lines 74 92) the Hoare annotation is: true [2020-10-24 23:17:34,433 INFO L274 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-10-24 23:17:34,433 INFO L274 CegarLoopResult]: For program point L59-2(line 59) no Hoare annotation was computed. [2020-10-24 23:17:34,434 INFO L270 CegarLoopResult]: At program point L59-3(lines 52 60) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) ULTIMATE.start___fpclassify_double_~msw~0) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|))))) (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x)) [2020-10-24 23:17:34,441 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,442 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,442 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,443 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,455 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,455 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,456 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,458 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,458 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,458 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,459 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,459 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,459 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,460 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,460 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,461 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,461 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,462 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,462 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,462 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,463 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,463 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,463 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,464 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,464 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,465 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,465 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,465 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,465 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,465 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,466 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,466 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,467 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,467 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,467 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,467 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,468 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,470 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,470 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,470 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,471 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,471 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:34 BoogieIcfgContainer [2020-10-24 23:17:34,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:34,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:34,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:34,474 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:34,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:28" (3/4) ... [2020-10-24 23:17:34,479 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 23:17:34,492 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-24 23:17:34,493 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-24 23:17:34,494 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 23:17:34,494 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 23:17:34,525 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\exists v_skolemized_v_prenex_1_3 : bv64 :: v_skolemized_v_prenex_1_3[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_v_prenex_1_3[63:63], v_skolemized_v_prenex_1_3[62:52], v_skolemized_v_prenex_1_3[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && !(0bv32 == \result) [2020-10-24 23:17:34,525 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == y) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x [2020-10-24 23:17:34,526 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && x == ~Pluszero~LONGDOUBLE() [2020-10-24 23:17:34,527 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y) && (\exists v_skolemized_v_prenex_5_3 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_v_prenex_5_3[63:63], v_skolemized_v_prenex_5_3[62:52], v_skolemized_v_prenex_5_3[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_v_prenex_5_3[63:32])) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && \result == 0bv32) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && x == ~Pluszero~LONGDOUBLE() [2020-10-24 23:17:34,527 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == y && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && !(0bv32 == \result) [2020-10-24 23:17:34,557 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:17:34,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:34,560 INFO L168 Benchmark]: Toolchain (without parser) took 7831.58 ms. Allocated memory was 46.1 MB in the beginning and 71.3 MB in the end (delta: 25.2 MB). Free memory was 31.0 MB in the beginning and 46.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:34,561 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 37.7 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:34,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.87 ms. Allocated memory is still 46.1 MB. Free memory was 30.4 MB in the beginning and 30.9 MB in the end (delta: -499.4 kB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:34,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.77 ms. Allocated memory is still 46.1 MB. Free memory was 30.9 MB in the beginning and 29.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:34,563 INFO L168 Benchmark]: Boogie Preprocessor took 40.65 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 27.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:34,564 INFO L168 Benchmark]: RCFGBuilder took 961.54 ms. Allocated memory is still 46.1 MB. Free memory was 27.3 MB in the beginning and 27.7 MB in the end (delta: -328.8 kB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:34,564 INFO L168 Benchmark]: TraceAbstraction took 6355.05 ms. Allocated memory was 46.1 MB in the beginning and 71.3 MB in the end (delta: 25.2 MB). Free memory was 27.1 MB in the beginning and 51.1 MB in the end (delta: -24.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:34,565 INFO L168 Benchmark]: Witness Printer took 83.36 ms. Allocated memory is still 71.3 MB. Free memory was 51.1 MB in the beginning and 46.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:34,569 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 20.2 MB in the beginning and 20.2 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.87 ms. Allocated memory is still 46.1 MB. Free memory was 30.4 MB in the beginning and 30.9 MB in the end (delta: -499.4 kB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.77 ms. Allocated memory is still 46.1 MB. Free memory was 30.9 MB in the beginning and 29.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.65 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 27.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 961.54 ms. Allocated memory is still 46.1 MB. Free memory was 27.3 MB in the beginning and 27.7 MB in the end (delta: -328.8 kB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6355.05 ms. Allocated memory was 46.1 MB in the beginning and 71.3 MB in the end (delta: 25.2 MB). Free memory was 27.1 MB in the beginning and 51.1 MB in the end (delta: -24.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 83.36 ms. Allocated memory is still 71.3 MB. Free memory was 51.1 MB in the beginning and 46.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 65]: Loop Invariant [2020-10-24 23:17:34,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,587 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,590 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,591 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,591 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,591 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: ((((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == y && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x - InvariantResult [Line: 25]: Loop Invariant [2020-10-24 23:17:34,594 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,595 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,595 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,595 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,595 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,596 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,596 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,596 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: (((~Pluszero~LONGDOUBLE() == y && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && !(0bv32 == \result) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == y && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 25]: Loop Invariant [2020-10-24 23:17:34,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] [2020-10-24 23:17:34,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_1_3,QUANTIFIED] Derived loop invariant: ((((\exists v_skolemized_v_prenex_1_3 : bv64 :: v_skolemized_v_prenex_1_3[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_v_prenex_1_3[63:63], v_skolemized_v_prenex_1_3[62:52], v_skolemized_v_prenex_1_3[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && !(0bv32 == \result) - InvariantResult [Line: 62]: Loop Invariant [2020-10-24 23:17:34,601 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,602 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,602 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,603 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,603 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,604 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,604 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,605 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,606 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,607 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,607 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,607 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_v_prenex_5_3,QUANTIFIED] [2020-10-24 23:17:34,608 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,608 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,609 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,610 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: ((((((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y) && (\exists v_skolemized_v_prenex_5_3 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_v_prenex_5_3[63:63], v_skolemized_v_prenex_5_3[62:52], v_skolemized_v_prenex_5_3[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_v_prenex_5_3[63:32])) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && \result == 0bv32) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 52]: Loop Invariant [2020-10-24 23:17:34,612 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,614 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,615 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] [2020-10-24 23:17:34,615 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_7,QUANTIFIED] Derived loop invariant: (((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == y) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && (\exists v_skolemized_q#valueAsBitvector_7 : bv64 :: v_skolemized_q#valueAsBitvector_7[63:32] == msw && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_7[63:63], v_skolemized_q#valueAsBitvector_7[62:52], v_skolemized_q#valueAsBitvector_7[51:0]))) && ~Pluszero~LONGDOUBLE() == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 252 SDtfs, 287 SDslu, 527 SDs, 0 SdLazy, 183 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 8 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 205 HoareAnnotationTreeSize, 8 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 32 QuantifiedInterpolants, 18200 SizeOfPredicates, 38 NumberOfNonLiveVariables, 555 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...