./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/cast_union_loose.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 ........................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/cast_union_loose.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 ............................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:18:17,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:18:17,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:18:17,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:18:17,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:18:17,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:18:17,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:18:17,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:18:17,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:18:17,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:18:17,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:18:17,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:18:17,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:18:17,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:18:17,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:18:17,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:18:17,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:18:17,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:18:17,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:18:17,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:18:17,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:18:17,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:18:17,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:18:17,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:18:17,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:18:17,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:18:17,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:18:17,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:18:17,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:18:17,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:18:17,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:18:17,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:18:17,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:18:17,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:18:17,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:18:17,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:18:17,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:18:17,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:18:17,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:18:17,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:18:17,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:18:17,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:18:17,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:18:17,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:18:17,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:18:17,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:18:17,896 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:18:17,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:18:17,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:18:17,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:18:17,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:18:17,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:18:17,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:18:17,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:18:17,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:18:17,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:18:17,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:18:17,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:18:17,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:18:17,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:18:17,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:18:17,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:18:17,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:18:17,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:18:17,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:18:17,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:18:17,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:18:17,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:18:17,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:18:17,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:18:17,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:18:17,904 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-10-24 14:18:18,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:18:18,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:18:18,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:18:18,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:18:18,462 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:18:18,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-24 14:18:18,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc9c98178/8af5d546c0484bec85fed4b67a33df0b/FLAG4c84739fc [2020-10-24 14:18:19,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:18:19,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-24 14:18:19,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc9c98178/8af5d546c0484bec85fed4b67a33df0b/FLAG4c84739fc [2020-10-24 14:18:19,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc9c98178/8af5d546c0484bec85fed4b67a33df0b [2020-10-24 14:18:19,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:18:19,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:18:19,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:19,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:18:19,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:18:19,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a7b0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19, skipping insertion in model container [2020-10-24 14:18:19,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,606 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:18:19,626 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:18:19,845 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:19,855 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:18:19,883 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:19,903 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:18:19,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19 WrapperNode [2020-10-24 14:18:19,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:19,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:19,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:18:19,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:18:19,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:19,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:18:19,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:18:19,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:18:19,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... [2020-10-24 14:18:19,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:18:19,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:18:19,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:18:19,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:18:19,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 14:18:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:18:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 14:18:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 14:18:20,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:18:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:18:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 14:18:20,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 14:18:20,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:18:20,388 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 14:18:20,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:20 BoogieIcfgContainer [2020-10-24 14:18:20,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:18:20,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:18:20,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:18:20,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:18:20,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:18:19" (1/3) ... [2020-10-24 14:18:20,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197b9690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:20, skipping insertion in model container [2020-10-24 14:18:20,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:19" (2/3) ... [2020-10-24 14:18:20,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197b9690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:20, skipping insertion in model container [2020-10-24 14:18:20,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:20" (3/3) ... [2020-10-24 14:18:20,401 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-10-24 14:18:20,414 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:18:20,420 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:18:20,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:18:20,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:18:20,493 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:18:20,493 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:18:20,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:18:20,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:18:20,494 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:18:20,497 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:18:20,497 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:18:20,526 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-10-24 14:18:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-24 14:18:20,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:20,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:20,537 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:20,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:20,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-10-24 14:18:20,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:20,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030156284] [2020-10-24 14:18:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:20,807 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 14:18:20,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030156284] [2020-10-24 14:18:20,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:18:20,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 14:18:20,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205861633] [2020-10-24 14:18:20,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 14:18:20,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 14:18:20,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 14:18:20,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 14:18:20,857 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-10-24 14:18:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:20,881 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-10-24 14:18:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 14:18:20,883 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-24 14:18:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:20,895 INFO L225 Difference]: With dead ends: 22 [2020-10-24 14:18:20,896 INFO L226 Difference]: Without dead ends: 8 [2020-10-24 14:18:20,901 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 14:18:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-24 14:18:20,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-24 14:18:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-24 14:18:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-10-24 14:18:20,954 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-10-24 14:18:20,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:20,955 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-10-24 14:18:20,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 14:18:20,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-10-24 14:18:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-24 14:18:20,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:20,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:20,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:18:20,958 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:20,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-10-24 14:18:20,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:18:20,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322672476] [2020-10-24 14:18:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:18:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:18:21,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:18:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:18:21,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:18:21,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:18:21,207 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:18:21,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 14:18:21,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:18:21 BoogieIcfgContainer [2020-10-24 14:18:21,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:18:21,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:18:21,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:18:21,259 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:18:21,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:20" (3/4) ... [2020-10-24 14:18:21,264 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:18:21,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:18:21,270 INFO L168 Benchmark]: Toolchain (without parser) took 1690.50 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 30.2 MB in the end (delta: 5.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:21,271 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:21,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.81 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 38.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:21,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.51 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 36.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:21,276 INFO L168 Benchmark]: Boogie Preprocessor took 29.67 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 35.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:21,278 INFO L168 Benchmark]: RCFGBuilder took 402.99 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 37.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:21,279 INFO L168 Benchmark]: TraceAbstraction took 865.59 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 30.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:21,280 INFO L168 Benchmark]: Witness Printer took 7.16 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 30.2 MB in the end (delta: 283.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:21,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.81 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 38.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.51 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 36.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.67 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 35.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 402.99 ms. Allocated memory is still 58.7 MB. Free memory was 35.2 MB in the beginning and 37.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 865.59 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 30.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.16 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 30.2 MB in the end (delta: 283.6 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 someBinaryArithmeticDOUBLE_SMToperation at line 27, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 39, overapproximation of bitwiseXor at line 26. Possible FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:18:24,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:18:24,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:18:24,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:18:24,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:18:24,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:18:24,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:18:24,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:18:24,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:18:24,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:18:24,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:18:24,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:18:24,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:18:24,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:18:24,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:18:24,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:18:24,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:18:24,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:18:24,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:18:24,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:18:24,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:18:24,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:18:24,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:18:24,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:18:24,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:18:24,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:18:24,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:18:24,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:18:24,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:18:24,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:18:24,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:18:24,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:18:24,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:18:24,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:18:24,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:18:24,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:18:24,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:18:24,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:18:24,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:18:24,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:18:24,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:18:24,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:18:24,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:18:24,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:18:24,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:18:24,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:18:24,270 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:18:24,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:18:24,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:18:24,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:18:24,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:18:24,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:18:24,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:18:24,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:18:24,274 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:18:24,274 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:18:24,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:18:24,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:18:24,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:18:24,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:18:24,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:18:24,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:18:24,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:18:24,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:18:24,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:18:24,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:18:24,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:18:24,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:18:24,278 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:18:24,278 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:18:24,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:18:24,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:18:24,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:18:24,279 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d326830d1a06d25f37f8f4a0194455fcdc1bce7 [2020-10-24 14:18:24,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:18:24,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:18:24,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:18:24,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:18:24,766 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:18:24,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-24 14:18:24,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b641c5ee/572ff4327f214a678824b7bd3a2c953e/FLAG1f851d13f [2020-10-24 14:18:25,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:18:25,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_loose.c [2020-10-24 14:18:25,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b641c5ee/572ff4327f214a678824b7bd3a2c953e/FLAG1f851d13f [2020-10-24 14:18:25,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b641c5ee/572ff4327f214a678824b7bd3a2c953e [2020-10-24 14:18:25,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:18:25,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:18:25,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:25,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:18:25,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:18:25,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:25" (1/1) ... [2020-10-24 14:18:25,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3253ac1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:25, skipping insertion in model container [2020-10-24 14:18:25,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:18:25" (1/1) ... [2020-10-24 14:18:25,825 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:18:25,846 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:18:26,031 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:26,047 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:18:26,075 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:18:26,099 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:18:26,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26 WrapperNode [2020-10-24 14:18:26,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:18:26,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:26,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:18:26,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:18:26,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:18:26,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:18:26,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:18:26,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:18:26,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... [2020-10-24 14:18:26,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:18:26,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:18:26,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:18:26,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:18:26,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 14:18:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 14:18:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 14:18:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:18:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:18:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 14:18:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:18:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:18:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 14:18:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 14:18:27,113 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:18:27,114 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-24 14:18:27,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:27 BoogieIcfgContainer [2020-10-24 14:18:27,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:18:27,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:18:27,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:18:27,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:18:27,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:18:25" (1/3) ... [2020-10-24 14:18:27,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78184260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:27, skipping insertion in model container [2020-10-24 14:18:27,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:18:26" (2/3) ... [2020-10-24 14:18:27,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78184260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:18:27, skipping insertion in model container [2020-10-24 14:18:27,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:27" (3/3) ... [2020-10-24 14:18:27,136 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_loose.c [2020-10-24 14:18:27,149 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:18:27,155 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 14:18:27,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 14:18:27,199 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:18:27,200 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:18:27,200 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:18:27,200 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:18:27,200 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:18:27,200 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:18:27,200 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:18:27,201 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:18:27,213 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-24 14:18:27,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 14:18:27,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:27,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:27,220 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:27,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash -594993304, now seen corresponding path program 1 times [2020-10-24 14:18:27,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:18:27,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735195005] [2020-10-24 14:18:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 14:18:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:18:27,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 14:18:27,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:18:27,593 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 14:18:27,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:18:27,597 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 14:18:27,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735195005] [2020-10-24 14:18:27,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:18:27,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 14:18:27,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781815681] [2020-10-24 14:18:27,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 14:18:27,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:18:27,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 14:18:27,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 14:18:27,623 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-24 14:18:27,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:18:27,640 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-10-24 14:18:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 14:18:27,641 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-24 14:18:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:18:27,651 INFO L225 Difference]: With dead ends: 26 [2020-10-24 14:18:27,651 INFO L226 Difference]: Without dead ends: 10 [2020-10-24 14:18:27,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 14:18:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-24 14:18:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-24 14:18:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-24 14:18:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-10-24 14:18:27,690 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-10-24 14:18:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:18:27,690 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-10-24 14:18:27,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 14:18:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-10-24 14:18:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-24 14:18:27,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:18:27,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:18:27,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:18:27,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:18:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:18:27,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1180014058, now seen corresponding path program 1 times [2020-10-24 14:18:27,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:18:27,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677605668] [2020-10-24 14:18:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 14:18:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:18:28,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:18:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:18:28,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:18:28,453 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 14:18:28,454 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:18:28,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:18:28,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:18:28 BoogieIcfgContainer [2020-10-24 14:18:28,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:18:28,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:18:28,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:18:28,690 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:18:28,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:18:27" (3/4) ... [2020-10-24 14:18:28,694 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 14:18:28,745 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 14:18:28,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:18:28,749 INFO L168 Benchmark]: Toolchain (without parser) took 2948.53 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.5 MB in the beginning and 35.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:28,749 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 35.7 MB. Free memory is still 17.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:28,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.73 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 23.1 MB in the end (delta: -284.9 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:28,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.21 ms. Allocated memory is still 46.1 MB. Free memory was 23.1 MB in the beginning and 21.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:28,752 INFO L168 Benchmark]: Boogie Preprocessor took 40.60 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 20.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:18:28,753 INFO L168 Benchmark]: RCFGBuilder took 926.60 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.0 MB in the beginning and 37.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:28,754 INFO L168 Benchmark]: TraceAbstraction took 1566.71 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 37.2 MB in the end (delta: -310.9 kB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:28,755 INFO L168 Benchmark]: Witness Printer took 55.94 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:18:28,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 35.7 MB. Free memory is still 17.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.73 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 23.1 MB in the end (delta: -284.9 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.21 ms. Allocated memory is still 46.1 MB. Free memory was 23.1 MB in the beginning and 21.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.60 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 20.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 926.60 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.0 MB in the beginning and 37.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1566.71 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 37.2 MB in the end (delta: -310.9 kB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * Witness Printer took 55.94 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L32] int a; [L33] double r; [L35] a = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L22] union u x, y; [L23] x.i[0] = 0x43300000 [L24] EXPR x.i[0] [L24] y.i[0] = x.i[0] [L25] x.i[1] = 0x80000000 [L26] EXPR x.i[1] [L26] y.i[1] = i ^ x.i[1] [L27] EXPR y.d [L27] EXPR x.d [L27] EXPR y.d - x.d [L27] return y.d - x.d; [L27] return y.d - x.d; [L27] return y.d - x.d; [L38] r = cast(a) [L39] EXPR 10000. [L39] EXPR -10000. [L39] r >= -10000. && r <= 10000. [L13] COND TRUE !(cond) [L3] __assert_fail("0", "cast_union_loose.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...