./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012a.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-newlib/double_req_bl_1012a.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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ................................................................................................................................................................................................................................................................................................... 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-newlib/double_req_bl_1012a.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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ................................................................................................................................................................................................................................................................................................................... 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 15:03:33,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:33,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:33,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:33,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:33,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:33,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:33,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:33,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:34,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:34,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:34,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:34,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:34,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:34,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:34,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:34,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:34,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:34,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:34,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:34,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:34,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:34,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:34,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:34,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:34,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:34,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:34,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:34,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:34,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:34,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:34,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:34,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:34,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:34,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:34,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:34,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:34,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:34,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:34,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:34,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:34,075 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 15:03:34,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:34,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:34,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:34,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:34,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:34,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:34,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:34,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:03:34,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:34,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:34,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:34,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:34,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:34,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:34,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:34,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:34,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:34,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:34,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:34,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:34,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:34,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:34,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:34,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:34,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:34,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:03:34,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:03:34,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:34,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:34,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-10-24 15:03:34,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:34,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:34,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:34,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:34,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:34,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-24 15:03:34,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1151e2a/4ffad3a21235493a8f3b152c3d0a8de2/FLAGa97e22ade [2020-10-24 15:03:35,398 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:03:35,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-24 15:03:35,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1151e2a/4ffad3a21235493a8f3b152c3d0a8de2/FLAGa97e22ade [2020-10-24 15:03:35,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b1151e2a/4ffad3a21235493a8f3b152c3d0a8de2 [2020-10-24 15:03:35,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:03:35,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:03:35,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:35,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:03:35,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:03:35,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:35" (1/1) ... [2020-10-24 15:03:35,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35be8f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:35, skipping insertion in model container [2020-10-24 15:03:35,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:35" (1/1) ... [2020-10-24 15:03:35,819 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:03:35,848 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:03:36,043 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:36,053 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:03:36,084 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:36,104 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:03:36,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36 WrapperNode [2020-10-24 15:03:36,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:36,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:36,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:03:36,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:03:36,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:36,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:03:36,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:03:36,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:03:36,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (1/1) ... [2020-10-24 15:03:36,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:03:36,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:03:36,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:03:36,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:03:36,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (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 15:03:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:03:36,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:03:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:03:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:03:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:03:36,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:03:36,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:03:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:03:36,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:03:36,879 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:03:36,880 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:03:36,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:36 BoogieIcfgContainer [2020-10-24 15:03:36,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:03:36,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:03:36,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:03:36,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:03:36,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:35" (1/3) ... [2020-10-24 15:03:36,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f87510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:36, skipping insertion in model container [2020-10-24 15:03:36,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:36" (2/3) ... [2020-10-24 15:03:36,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f87510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:36, skipping insertion in model container [2020-10-24 15:03:36,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:36" (3/3) ... [2020-10-24 15:03:36,894 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-10-24 15:03:36,910 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:03:36,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:03:36,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:03:36,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:03:36,983 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:03:36,983 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:03:36,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:03:36,984 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:03:36,984 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:03:36,985 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:03:36,985 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:03:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 15:03:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:03:37,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:37,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:37,017 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:37,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:37,024 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-24 15:03:37,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:37,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009044414] [2020-10-24 15:03:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:03:37,233 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 15:03:37,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009044414] [2020-10-24 15:03:37,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:03:37,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:03:37,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631621118] [2020-10-24 15:03:37,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:03:37,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:03:37,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:03:37,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:03:37,273 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 15:03:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:03:37,297 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 15:03:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:03:37,299 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 15:03:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:03:37,319 INFO L225 Difference]: With dead ends: 35 [2020-10-24 15:03:37,320 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 15:03:37,332 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 15:03:37,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 15:03:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-24 15:03:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 15:03:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-24 15:03:37,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-24 15:03:37,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:03:37,374 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-24 15:03:37,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:03:37,374 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-24 15:03:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:03:37,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:37,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:37,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:03:37,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-24 15:03:37,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:37,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303879511] [2020-10-24 15:03:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:37,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:37,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:37,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:03:37,656 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:03:37,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:03:37,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:03:37 BoogieIcfgContainer [2020-10-24 15:03:37,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:03:37,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:03:37,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:03:37,696 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:03:37,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:36" (3/4) ... [2020-10-24 15:03:37,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:03:37,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:03:37,705 INFO L168 Benchmark]: Toolchain (without parser) took 1937.23 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.7 MB in the beginning and 37.4 MB in the end (delta: -15.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:37,706 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:37,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.33 ms. Allocated memory is still 44.0 MB. Free memory was 29.9 MB in the beginning and 19.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:37,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 44.0 MB. Free memory was 19.6 MB in the beginning and 18.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:37,710 INFO L168 Benchmark]: Boogie Preprocessor took 44.29 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.0 MB in the beginning and 38.8 MB in the end (delta: -20.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:37,711 INFO L168 Benchmark]: RCFGBuilder took 681.88 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 35.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:37,712 INFO L168 Benchmark]: TraceAbstraction took 810.38 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 38.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:37,713 INFO L168 Benchmark]: Witness Printer took 6.51 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 37.4 MB in the end (delta: 308.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:37,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 26.4 MB in the beginning and 26.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.33 ms. Allocated memory is still 44.0 MB. Free memory was 29.9 MB in the beginning and 19.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 44.0 MB. Free memory was 19.6 MB in the beginning and 18.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.29 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.0 MB in the beginning and 38.8 MB in the end (delta: -20.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 681.88 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 35.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 810.38 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 38.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.51 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 37.4 MB in the end (delta: 308.5 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 70, overapproximation of bitwiseOr at line 41, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=19occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 15:03:40,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:40,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:40,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:40,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:40,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:40,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:40,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:40,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:40,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:40,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:40,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:40,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:40,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:40,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:40,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:40,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:40,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:40,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:40,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:40,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:40,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:40,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:40,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:40,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:40,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:40,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:40,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:40,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:40,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:40,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:40,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:40,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:40,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:40,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:40,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:40,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:40,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:40,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:40,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:40,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:40,618 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 15:03:40,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:40,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:40,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:40,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:40,671 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:40,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:40,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:40,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:40,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:40,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:40,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:40,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:40,673 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:03:40,674 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:03:40,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:40,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:40,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:40,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:40,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:40,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:40,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:40,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:40,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:40,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:40,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:40,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:40,677 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:03:40,677 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:03:40,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:40,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:40,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:03:40,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-10-24 15:03:41,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:41,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:41,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:41,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:41,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:41,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-24 15:03:41,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53de82942/7b2ffe7ca6b147da8a8c3c9c88c2d04a/FLAGb28d7e289 [2020-10-24 15:03:41,827 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:03:41,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-24 15:03:41,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53de82942/7b2ffe7ca6b147da8a8c3c9c88c2d04a/FLAGb28d7e289 [2020-10-24 15:03:42,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53de82942/7b2ffe7ca6b147da8a8c3c9c88c2d04a [2020-10-24 15:03:42,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:03:42,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:03:42,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:42,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:03:42,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:03:42,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153c92fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42, skipping insertion in model container [2020-10-24 15:03:42,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,156 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:03:42,181 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:03:42,482 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:42,497 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:03:42,528 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:42,557 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:03:42,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42 WrapperNode [2020-10-24 15:03:42,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:42,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:42,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:03:42,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:03:42,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:42,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:03:42,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:03:42,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:03:42,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (1/1) ... [2020-10-24 15:03:42,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:03:42,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:03:42,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:03:42,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:03:42,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (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 15:03:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:03:42,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 15:03:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:03:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:03:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:03:42,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:03:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:03:42,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:03:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:03:42,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:03:43,231 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:03:43,232 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:03:43,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:43 BoogieIcfgContainer [2020-10-24 15:03:43,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:03:43,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:03:43,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:03:43,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:03:43,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:42" (1/3) ... [2020-10-24 15:03:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537e9976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:43, skipping insertion in model container [2020-10-24 15:03:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:42" (2/3) ... [2020-10-24 15:03:43,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537e9976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:43, skipping insertion in model container [2020-10-24 15:03:43,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:43" (3/3) ... [2020-10-24 15:03:43,247 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-10-24 15:03:43,266 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:03:43,272 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:03:43,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:03:43,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:03:43,335 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:03:43,335 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:03:43,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:03:43,336 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:03:43,336 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:03:43,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:03:43,336 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:03:43,352 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 15:03:43,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:03:43,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:43,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:43,361 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-24 15:03:43,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:03:43,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70782810] [2020-10-24 15:03:43,385 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 15:03:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:03:44,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:03:44,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:03:44,478 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 15:03:44,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:03:44,484 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 15:03:44,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70782810] [2020-10-24 15:03:44,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:03:44,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:03:44,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731866300] [2020-10-24 15:03:44,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:03:44,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:03:44,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:03:44,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:03:44,511 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 15:03:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:03:44,527 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 15:03:44,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:03:44,529 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 15:03:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:03:44,539 INFO L225 Difference]: With dead ends: 35 [2020-10-24 15:03:44,539 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 15:03:44,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 15:03:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 15:03:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-24 15:03:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 15:03:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-24 15:03:44,579 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-24 15:03:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:03:44,580 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-24 15:03:44,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:03:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-24 15:03:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:03:44,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:44,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:44,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:03:44,783 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:44,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:44,785 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-24 15:03:44,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:03:44,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418666431] [2020-10-24 15:03:44,787 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 15:03:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:45,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:46,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:47,131 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:03:47,132 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:03:47,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:03:47,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:03:47 BoogieIcfgContainer [2020-10-24 15:03:47,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:03:47,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:03:47,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:03:47,369 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:03:47,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:43" (3/4) ... [2020-10-24 15:03:47,372 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:03:47,426 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:03:47,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:03:47,429 INFO L168 Benchmark]: Toolchain (without parser) took 5312.81 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 22.4 MB in the beginning and 38.2 MB in the end (delta: -15.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:47,430 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory is still 27.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:47,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.21 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 21.8 MB in the beginning and 36.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:47,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.69 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 34.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:47,433 INFO L168 Benchmark]: Boogie Preprocessor took 38.73 ms. Allocated memory is still 60.8 MB. Free memory was 34.8 MB in the beginning and 33.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:47,433 INFO L168 Benchmark]: RCFGBuilder took 591.59 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 36.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:47,434 INFO L168 Benchmark]: TraceAbstraction took 4130.19 ms. Allocated memory is still 60.8 MB. Free memory was 35.6 MB in the beginning and 40.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:47,435 INFO L168 Benchmark]: Witness Printer took 58.17 ms. Allocated memory is still 60.8 MB. Free memory was 40.7 MB in the beginning and 38.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:47,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory is still 27.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 432.21 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 21.8 MB in the beginning and 36.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.69 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 34.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.73 ms. Allocated memory is still 60.8 MB. Free memory was 34.8 MB in the beginning and 33.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 591.59 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 36.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4130.19 ms. Allocated memory is still 60.8 MB. Free memory was 35.6 MB in the beginning and 40.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Witness Printer took 58.17 ms. Allocated memory is still 60.8 MB. Free memory was 40.7 MB in the beginning and 38.6 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: [L70] EXPR 1.0 [L70] EXPR 0.0 [L70] EXPR 1.0 / 0.0 [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1.9s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 39 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...