./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.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_1012b.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 375bec20b72ecdcbd44e4f617a51a92835ad48e7 ................................................................................................................................................................................................................................................................................................... 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_1012b.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 375bec20b72ecdcbd44e4f617a51a92835ad48e7 .................................................................................................................................................................................................................................................................................................................... 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 15:03:35,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:35,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:36,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:36,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:36,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:36,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:36,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:36,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:36,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:36,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:36,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:36,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:36,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:36,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:36,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:36,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:36,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:36,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:36,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:36,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:36,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:36,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:36,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:36,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:36,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:36,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:36,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:36,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:36,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:36,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:36,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:36,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:36,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:36,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:36,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:36,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:36,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:36,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:36,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:36,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:36,114 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 15:03:36,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:36,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:36,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:36,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:36,172 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:36,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:36,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:36,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:03:36,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:36,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:36,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:36,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:36,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:36,174 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:36,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:36,175 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:36,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:36,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:36,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:36,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:36,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:36,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:36,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:36,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:36,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:36,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:03:36,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:03:36,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:36,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:36,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-24 15:03:36,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:36,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:36,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:36,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:36,596 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:36,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 15:03:36,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607acb721/73168625ca0a4b86bb7416650e9f445b/FLAGdbe214b0b [2020-10-24 15:03:37,316 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:03:37,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 15:03:37,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607acb721/73168625ca0a4b86bb7416650e9f445b/FLAGdbe214b0b [2020-10-24 15:03:37,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607acb721/73168625ca0a4b86bb7416650e9f445b [2020-10-24 15:03:37,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:03:37,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:03:37,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:37,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:03:37,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:03:37,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:37,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f230fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37, skipping insertion in model container [2020-10-24 15:03:37,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:37,713 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:03:37,742 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:03:37,934 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:37,944 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:03:37,974 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:37,993 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:03:37,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37 WrapperNode [2020-10-24 15:03:37,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:37,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:37,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:03:37,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:03:38,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:38,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:03:38,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:03:38,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:03:38,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (1/1) ... [2020-10-24 15:03:38,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:03:38,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:03:38,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:03:38,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:03:38,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (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 15:03:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:03:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:03:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:03:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:03:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:03:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:03:38,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:03:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:03:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:03:38,705 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:03:38,705 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:03:38,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:38 BoogieIcfgContainer [2020-10-24 15:03:38,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:03:38,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:03:38,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:03:38,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:03:38,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:37" (1/3) ... [2020-10-24 15:03:38,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ed4d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:38, skipping insertion in model container [2020-10-24 15:03:38,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:37" (2/3) ... [2020-10-24 15:03:38,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ed4d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:38, skipping insertion in model container [2020-10-24 15:03:38,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:38" (3/3) ... [2020-10-24 15:03:38,718 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-24 15:03:38,730 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:03:38,736 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:03:38,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:03:38,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:03:38,781 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:03:38,781 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:03:38,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:03:38,782 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:03:38,782 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:03:38,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:03:38,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:03:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 15:03:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:03:38,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:38,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:38,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-24 15:03:38,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:38,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610582789] [2020-10-24 15:03:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:03:38,983 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 15:03:38,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610582789] [2020-10-24 15:03:38,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:03:38,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:03:38,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116208720] [2020-10-24 15:03:38,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:03:38,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:03:39,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:03:39,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:03:39,021 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 15:03:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:03:39,041 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 15:03:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:03:39,043 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 15:03:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:03:39,054 INFO L225 Difference]: With dead ends: 35 [2020-10-24 15:03:39,054 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 15:03:39,058 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 15:03:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 15:03:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-24 15:03:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 15:03:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-24 15:03:39,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-24 15:03:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:03:39,098 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-24 15:03:39,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:03:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-24 15:03:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:03:39,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:39,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:39,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:03:39,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-24 15:03:39,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:39,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253729079] [2020-10-24 15:03:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:39,279 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:39,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:39,468 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:03:39,468 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:03:39,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:03:39,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:03:39 BoogieIcfgContainer [2020-10-24 15:03:39,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:03:39,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:03:39,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:03:39,531 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:03:39,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:38" (3/4) ... [2020-10-24 15:03:39,535 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:03:39,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:03:39,541 INFO L168 Benchmark]: Toolchain (without parser) took 1860.49 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.6 MB in the beginning and 37.7 MB in the end (delta: -16.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:39,543 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 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 15:03:39,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.56 ms. Allocated memory is still 44.0 MB. Free memory was 30.2 MB in the beginning and 20.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:39,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.26 ms. Allocated memory is still 44.0 MB. Free memory was 20.0 MB in the beginning and 18.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:39,548 INFO L168 Benchmark]: Boogie Preprocessor took 78.85 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.3 MB in the beginning and 39.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:39,549 INFO L168 Benchmark]: RCFGBuilder took 583.72 ms. Allocated memory is still 54.5 MB. Free memory was 39.0 MB in the beginning and 36.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:39,550 INFO L168 Benchmark]: TraceAbstraction took 820.42 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 38.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:39,552 INFO L168 Benchmark]: Witness Printer took 5.52 ms. Allocated memory is still 54.5 MB. Free memory was 38.3 MB in the beginning and 38.0 MB in the end (delta: 302.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:39,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 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 301.56 ms. Allocated memory is still 44.0 MB. Free memory was 30.2 MB in the beginning and 20.0 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 48.26 ms. Allocated memory is still 44.0 MB. Free memory was 20.0 MB in the beginning and 18.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.85 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.3 MB in the beginning and 39.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 583.72 ms. Allocated memory is still 54.5 MB. Free memory was 39.0 MB in the beginning and 36.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 820.42 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 38.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.52 ms. Allocated memory is still 54.5 MB. Free memory was 38.3 MB in the beginning and 38.0 MB in the end (delta: 302.1 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 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_1012b.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 15:03:42,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:42,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:42,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:42,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:42,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:42,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:42,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:42,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:42,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:42,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:42,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:42,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:42,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:42,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:42,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:42,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:42,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:42,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:42,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:42,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:42,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:42,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:42,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:42,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:42,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:42,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:42,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:42,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:42,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:42,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:42,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:42,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:42,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:42,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:42,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:42,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:42,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:42,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:42,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:42,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:42,321 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 15:03:42,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:42,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:42,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:42,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:42,381 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:42,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:42,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:42,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:42,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:42,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:42,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:42,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:42,384 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:03:42,384 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:03:42,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:42,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:42,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:42,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:42,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:42,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:42,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:42,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:42,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:42,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:42,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:42,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:42,388 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:03:42,388 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:03:42,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:42,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:42,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:03:42,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-24 15:03:42,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:42,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:42,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:42,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:42,909 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:42,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 15:03:42,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b4135bee/833fdb2bec5a4324bdb272904030ec4e/FLAG35b10ea83 [2020-10-24 15:03:43,598 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:03:43,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-24 15:03:43,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b4135bee/833fdb2bec5a4324bdb272904030ec4e/FLAG35b10ea83 [2020-10-24 15:03:43,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b4135bee/833fdb2bec5a4324bdb272904030ec4e [2020-10-24 15:03:43,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:03:43,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:03:43,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:43,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:03:44,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:03:44,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:43" (1/1) ... [2020-10-24 15:03:44,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d333a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44, skipping insertion in model container [2020-10-24 15:03:44,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:43" (1/1) ... [2020-10-24 15:03:44,032 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:03:44,057 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:03:44,233 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:44,251 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:03:44,297 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:44,327 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:03:44,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44 WrapperNode [2020-10-24 15:03:44,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:44,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:44,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:03:44,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:03:44,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:44,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:03:44,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:03:44,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:03:44,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (1/1) ... [2020-10-24 15:03:44,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:03:44,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:03:44,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:03:44,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:03:44,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (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 15:03:44,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:03:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 15:03:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:03:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:03:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:03:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:03:44,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:03:44,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:03:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:03:44,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:03:44,878 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:03:44,882 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:03:44,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:44 BoogieIcfgContainer [2020-10-24 15:03:44,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:03:44,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:03:44,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:03:44,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:03:44,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:43" (1/3) ... [2020-10-24 15:03:44,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52369f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:44, skipping insertion in model container [2020-10-24 15:03:44,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:44" (2/3) ... [2020-10-24 15:03:44,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52369f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:44, skipping insertion in model container [2020-10-24 15:03:44,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:44" (3/3) ... [2020-10-24 15:03:44,897 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-24 15:03:44,912 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:03:44,919 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:03:44,940 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:03:45,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:03:45,006 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:03:45,006 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:03:45,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:03:45,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:03:45,007 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:03:45,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:03:45,008 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:03:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 15:03:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:03:45,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:45,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:45,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-24 15:03:45,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:03:45,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515518877] [2020-10-24 15:03:45,112 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 15:03:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:03:46,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:03:46,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:03:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:03:46,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:03:46,397 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 15:03:46,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515518877] [2020-10-24 15:03:46,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:03:46,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:03:46,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566115258] [2020-10-24 15:03:46,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:03:46,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:03:46,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:03:46,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:03:46,425 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-24 15:03:46,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:03:46,445 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-24 15:03:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:03:46,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 15:03:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:03:46,456 INFO L225 Difference]: With dead ends: 35 [2020-10-24 15:03:46,457 INFO L226 Difference]: Without dead ends: 15 [2020-10-24 15:03:46,460 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 15:03:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-24 15:03:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-24 15:03:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-24 15:03:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-24 15:03:46,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-24 15:03:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:03:46,499 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-24 15:03:46,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:03:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-24 15:03:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:03:46,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:46,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:46,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:03:46,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:46,718 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-24 15:03:46,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:03:46,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760358789] [2020-10-24 15:03:46,720 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 15:03:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:47,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:49,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:49,297 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:03:49,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:03:49,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:03:49,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:03:49 BoogieIcfgContainer [2020-10-24 15:03:49,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:03:49,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:03:49,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:03:49,535 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:03:49,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:44" (3/4) ... [2020-10-24 15:03:49,537 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:03:49,586 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:03:49,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:03:49,591 INFO L168 Benchmark]: Toolchain (without parser) took 5616.22 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.8 MB in the beginning and 34.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:49,593 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 46.1 MB. Free memory was 32.3 MB in the beginning and 32.3 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:49,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.37 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 42.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:49,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.9 MB in the beginning and 40.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:49,600 INFO L168 Benchmark]: Boogie Preprocessor took 67.73 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 38.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:49,601 INFO L168 Benchmark]: RCFGBuilder took 433.67 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 36.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:49,602 INFO L168 Benchmark]: TraceAbstraction took 4646.60 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 36.1 MB in the end (delta: -608.1 kB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:49,603 INFO L168 Benchmark]: Witness Printer took 52.17 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 34.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:49,608 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 46.1 MB. Free memory was 32.3 MB in the beginning and 32.3 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.37 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 42.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.16 ms. Allocated memory is still 58.7 MB. Free memory was 41.9 MB in the beginning and 40.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.73 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 38.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 433.67 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 36.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4646.60 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 36.1 MB in the end (delta: -608.1 kB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Witness Printer took 52.17 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 34.1 MB in the end (delta: 2.0 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 -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_1012b.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: 4.5s, 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, 2.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 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...