./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072a.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_1072a.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 9ef877ce38bde19caca23c0b110041aea30d9b13 ........................................................................................................................................................................................................................................................................................................ 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_1072a.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 9ef877ce38bde19caca23c0b110041aea30d9b13 ......................................................................................................................................................................................................................................................................................................................... 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 15:04:32,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:04:32,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:04:32,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:04:32,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:04:32,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:04:32,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:04:32,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:04:32,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:04:32,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:04:32,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:04:32,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:04:32,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:04:32,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:04:32,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:04:32,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:04:32,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:04:32,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:04:32,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:04:33,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:04:33,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:04:33,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:04:33,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:04:33,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:04:33,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:04:33,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:04:33,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:04:33,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:04:33,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:04:33,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:04:33,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:04:33,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:04:33,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:04:33,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:04:33,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:04:33,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:04:33,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:04:33,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:04:33,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:04:33,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:04:33,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:04:33,043 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 15:04:33,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:04:33,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:04:33,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:04:33,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:04:33,107 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:04:33,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:04:33,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:04:33,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:04:33,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:04:33,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:04:33,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:04:33,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:04:33,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:04:33,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:04:33,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:04:33,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:04:33,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:04:33,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:04:33,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:04:33,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:04:33,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:04:33,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:04:33,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:04:33,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:04:33,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:04:33,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:04:33,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:04:33,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:04:33,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:04:33,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-10-24 15:04:33,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:04:33,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:04:33,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:04:33,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:04:33,585 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:04:33,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-24 15:04:33,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b93b881/4601a17711bb4c5eb1665fec8868ca28/FLAGadb37eac3 [2020-10-24 15:04:34,425 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:04:34,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-24 15:04:34,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b93b881/4601a17711bb4c5eb1665fec8868ca28/FLAGadb37eac3 [2020-10-24 15:04:34,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b93b881/4601a17711bb4c5eb1665fec8868ca28 [2020-10-24 15:04:34,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:04:34,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:04:34,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:34,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:04:34,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:04:34,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:34" (1/1) ... [2020-10-24 15:04:34,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98ed646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:34, skipping insertion in model container [2020-10-24 15:04:34,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:34" (1/1) ... [2020-10-24 15:04:34,771 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:04:34,790 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:04:35,051 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:35,062 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:04:35,098 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:35,117 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:04:35,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35 WrapperNode [2020-10-24 15:04:35,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:35,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:35,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:04:35,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:04:35,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:35,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:04:35,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:04:35,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:04:35,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (1/1) ... [2020-10-24 15:04:35,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:04:35,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:04:35,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:04:35,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:04:35,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (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 15:04:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:04:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:04:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:04:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:04:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:04:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:04:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:04:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:04:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:04:35,897 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:04:35,898 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:04:35,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:35 BoogieIcfgContainer [2020-10-24 15:04:35,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:04:35,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:04:35,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:04:35,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:04:35,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:04:34" (1/3) ... [2020-10-24 15:04:35,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d330347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:35, skipping insertion in model container [2020-10-24 15:04:35,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:35" (2/3) ... [2020-10-24 15:04:35,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d330347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:35, skipping insertion in model container [2020-10-24 15:04:35,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:35" (3/3) ... [2020-10-24 15:04:35,912 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-10-24 15:04:35,925 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:04:35,931 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:04:35,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:04:35,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:04:35,991 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:04:35,991 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:04:35,991 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:04:35,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:04:35,992 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:04:35,992 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:04:35,992 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:04:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-24 15:04:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:04:36,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:36,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:36,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:36,028 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-24 15:04:36,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:04:36,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524936704] [2020-10-24 15:04:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:04:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:04:36,209 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 15:04:36,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524936704] [2020-10-24 15:04:36,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:04:36,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:04:36,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282545664] [2020-10-24 15:04:36,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:04:36,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:04:36,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:04:36,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:04:36,240 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-24 15:04:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:04:36,263 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-24 15:04:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:04:36,265 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:04:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:04:36,278 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:04:36,279 INFO L226 Difference]: Without dead ends: 24 [2020-10-24 15:04:36,282 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 15:04:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-24 15:04:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-24 15:04:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-24 15:04:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-24 15:04:36,327 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-24 15:04:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:04:36,328 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-24 15:04:36,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:04:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-24 15:04:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:04:36,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:36,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:36,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:04:36,331 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:36,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-24 15:04:36,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:04:36,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585232787] [2020-10-24 15:04:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:04:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:04:36,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:04:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:04:36,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:04:36,634 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:04:36,635 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:04:36,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:04:36,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:04:36 BoogieIcfgContainer [2020-10-24 15:04:36,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:04:36,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:04:36,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:04:36,676 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:04:36,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:35" (3/4) ... [2020-10-24 15:04:36,681 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:04:36,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:04:36,685 INFO L168 Benchmark]: Toolchain (without parser) took 1937.05 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.5 MB in the beginning and 28.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:36,686 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 44.0 MB. Free memory was 31.2 MB in the beginning and 31.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:36,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.23 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 21.4 MB in the end (delta: -639.3 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:36,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.95 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 29.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:36,689 INFO L168 Benchmark]: Boogie Preprocessor took 41.35 ms. Allocated memory is still 44.0 MB. Free memory was 29.0 MB in the beginning and 27.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:36,690 INFO L168 Benchmark]: RCFGBuilder took 673.94 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 25.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:36,693 INFO L168 Benchmark]: TraceAbstraction took 772.71 ms. Allocated memory is still 54.5 MB. Free memory was 25.5 MB in the beginning and 28.5 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:36,695 INFO L168 Benchmark]: Witness Printer took 5.99 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 28.1 MB in the end (delta: 347.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:36,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 44.0 MB. Free memory was 31.2 MB in the beginning and 31.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.23 ms. Allocated memory is still 44.0 MB. Free memory was 20.8 MB in the beginning and 21.4 MB in the end (delta: -639.3 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.95 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 29.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.35 ms. Allocated memory is still 44.0 MB. Free memory was 29.0 MB in the beginning and 27.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 673.94 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 25.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 772.71 ms. Allocated memory is still 54.5 MB. Free memory was 25.5 MB in the beginning and 28.5 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.99 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 28.1 MB in the end (delta: 347.1 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 51, overapproximation of bitwiseOr at line 74, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 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: 30 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=28occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 15:04:39,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:04:39,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:04:39,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:04:39,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:04:39,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:04:39,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:04:39,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:04:39,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:04:39,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:04:39,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:04:39,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:04:39,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:04:39,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:04:39,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:04:39,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:04:39,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:04:39,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:04:39,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:04:39,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:04:39,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:04:39,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:04:39,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:04:39,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:04:39,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:04:39,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:04:39,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:04:39,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:04:39,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:04:39,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:04:39,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:04:39,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:04:39,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:04:39,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:04:39,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:04:39,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:04:39,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:04:39,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:04:39,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:04:39,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:04:39,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:04:39,435 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 15:04:39,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:04:39,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:04:39,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:04:39,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:04:39,477 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:04:39,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:04:39,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:04:39,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:04:39,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:04:39,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:04:39,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:04:39,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:04:39,482 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:04:39,482 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:04:39,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:04:39,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:04:39,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:04:39,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:04:39,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:04:39,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:04:39,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:04:39,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:04:39,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:04:39,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:04:39,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:04:39,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:04:39,486 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:04:39,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:04:39,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:04:39,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:04:39,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:04:39,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef877ce38bde19caca23c0b110041aea30d9b13 [2020-10-24 15:04:39,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:04:40,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:04:40,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:04:40,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:04:40,022 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:04:40,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-24 15:04:40,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96550b2e5/5e3c42cd78ef41cabe5b136fe07bbb3d/FLAG175037f04 [2020-10-24 15:04:40,732 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:04:40,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2020-10-24 15:04:40,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96550b2e5/5e3c42cd78ef41cabe5b136fe07bbb3d/FLAG175037f04 [2020-10-24 15:04:41,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96550b2e5/5e3c42cd78ef41cabe5b136fe07bbb3d [2020-10-24 15:04:41,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:04:41,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:04:41,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:41,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:04:41,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:04:41,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c60c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41, skipping insertion in model container [2020-10-24 15:04:41,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,154 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:04:41,179 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:04:41,458 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:41,476 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:04:41,516 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:41,548 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:04:41,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41 WrapperNode [2020-10-24 15:04:41,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:41,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:41,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:04:41,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:04:41,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:41,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:04:41,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:04:41,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:04:41,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (1/1) ... [2020-10-24 15:04:41,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:04:41,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:04:41,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:04:41,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:04:41,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (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 15:04:41,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:04:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 15:04:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:04:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:04:41,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:04:41,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:04:41,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:04:41,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:04:41,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:04:41,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:04:42,313 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:04:42,315 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:04:42,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:42 BoogieIcfgContainer [2020-10-24 15:04:42,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:04:42,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:04:42,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:04:42,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:04:42,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:04:41" (1/3) ... [2020-10-24 15:04:42,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b77bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:42, skipping insertion in model container [2020-10-24 15:04:42,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:41" (2/3) ... [2020-10-24 15:04:42,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b77bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:42, skipping insertion in model container [2020-10-24 15:04:42,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:42" (3/3) ... [2020-10-24 15:04:42,341 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2020-10-24 15:04:42,353 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:04:42,364 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:04:42,378 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:04:42,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:04:42,413 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:04:42,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:04:42,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:04:42,414 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:04:42,414 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:04:42,414 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:04:42,414 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:04:42,429 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-24 15:04:42,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:04:42,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:42,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:42,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:42,443 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-24 15:04:42,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:04:42,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091933249] [2020-10-24 15:04:42,458 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 15:04:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:04:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:04:43,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:04:43,769 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 15:04:43,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:04:43,775 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 15:04:43,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091933249] [2020-10-24 15:04:43,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:04:43,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:04:43,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875316319] [2020-10-24 15:04:43,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:04:43,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:04:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:04:43,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:04:43,801 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-24 15:04:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:04:43,820 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-24 15:04:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:04:43,821 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:04:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:04:43,831 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:04:43,831 INFO L226 Difference]: Without dead ends: 24 [2020-10-24 15:04:43,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 15:04:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-24 15:04:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-24 15:04:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-24 15:04:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-24 15:04:43,873 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-24 15:04:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:04:43,874 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-24 15:04:43,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:04:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-24 15:04:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:04:43,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:43,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:44,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:04:44,089 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-24 15:04:44,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:04:44,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925278316] [2020-10-24 15:04:44,094 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 15:04:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:04:45,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:04:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:04:46,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:04:46,673 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:04:46,673 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:04:46,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:04:46,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:04:46 BoogieIcfgContainer [2020-10-24 15:04:46,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:04:46,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:04:46,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:04:46,911 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:04:46,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:42" (3/4) ... [2020-10-24 15:04:46,914 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:04:46,974 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:04:46,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:04:46,977 INFO L168 Benchmark]: Toolchain (without parser) took 5859.55 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.9 MB in the beginning and 24.6 MB in the end (delta: -739.1 kB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:46,977 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 46.1 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:46,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.03 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 22.7 MB in the end (delta: 539.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:46,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.81 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 20.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:46,980 INFO L168 Benchmark]: Boogie Preprocessor took 49.10 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.8 MB in the beginning and 41.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:46,980 INFO L168 Benchmark]: RCFGBuilder took 633.58 ms. Allocated memory is still 56.6 MB. Free memory was 40.8 MB in the beginning and 33.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:46,981 INFO L168 Benchmark]: TraceAbstraction took 4586.10 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 27.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:46,982 INFO L168 Benchmark]: Witness Printer took 63.01 ms. Allocated memory is still 56.6 MB. Free memory was 27.0 MB in the beginning and 24.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:46,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 46.1 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.03 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 22.7 MB in the end (delta: 539.8 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.81 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 20.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.10 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.8 MB in the beginning and 41.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 633.58 ms. Allocated memory is still 56.6 MB. Free memory was 40.8 MB in the beginning and 33.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4586.10 ms. Allocated memory is still 56.6 MB. Free memory was 33.3 MB in the beginning and 27.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 63.01 ms. Allocated memory is still 56.6 MB. Free memory was 27.0 MB in the beginning and 24.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 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: [L86] EXPR 1.0 [L86] EXPR 0.0 [L86] EXPR 1.0 / 0.0 [L86] double x = 1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] EXPR x + x [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 2.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 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...