./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1300.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6775086e1d92d324fce714cac739cb50ade22067 ........................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6775086e1d92d324fce714cac739cb50ade22067 ........................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-096883e [2020-12-01 23:21:06,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:21:06,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:21:06,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:21:06,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:21:06,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:21:06,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:21:06,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:21:06,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:21:06,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:21:06,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:21:06,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:21:06,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:21:06,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:21:06,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:21:06,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:21:06,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:21:06,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:21:06,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:21:06,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:21:06,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:21:06,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:21:06,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:21:06,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:21:06,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:21:06,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:21:06,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:21:06,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:21:06,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:21:06,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:21:06,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:21:06,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:21:06,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:21:06,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:21:06,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:21:06,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:21:06,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:21:06,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:21:06,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:21:06,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:21:06,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:21:06,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:21:07,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:21:07,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:21:07,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:21:07,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:21:07,012 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:21:07,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:21:07,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:21:07,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:21:07,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:21:07,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:21:07,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:21:07,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:21:07,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:21:07,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:21:07,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:21:07,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:21:07,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:21:07,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:21:07,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:21:07,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:21:07,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:21:07,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:21:07,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:21:07,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:21:07,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:21:07,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:21:07,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:21:07,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:21:07,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:21:07,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-12-01 23:21:07,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:21:07,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:21:07,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:21:07,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:21:07,447 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:21:07,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-12-01 23:21:07,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e70194c/cf768db6d76b42cdb55f30e54558d38d/FLAGe9e5ee6e8 [2020-12-01 23:21:08,173 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:21:08,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-12-01 23:21:08,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e70194c/cf768db6d76b42cdb55f30e54558d38d/FLAGe9e5ee6e8 [2020-12-01 23:21:08,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5e70194c/cf768db6d76b42cdb55f30e54558d38d [2020-12-01 23:21:08,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:21:08,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:21:08,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:08,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:21:08,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:21:08,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d53833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08, skipping insertion in model container [2020-12-01 23:21:08,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:21:08,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:21:08,761 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c[1563,1576] [2020-12-01 23:21:08,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:08,774 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:21:08,799 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c[1563,1576] [2020-12-01 23:21:08,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:08,817 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:21:08,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08 WrapperNode [2020-12-01 23:21:08,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:08,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:08,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:21:08,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:21:08,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:08,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:21:08,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:21:08,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:21:08,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... [2020-12-01 23:21:08,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:21:08,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:21:08,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:21:08,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:21:08,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:21:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:21:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:21:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:21:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:21:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:21:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:21:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:21:09,355 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:21:09,355 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 23:21:09,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:09 BoogieIcfgContainer [2020-12-01 23:21:09,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:21:09,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:21:09,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:21:09,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:21:09,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:21:08" (1/3) ... [2020-12-01 23:21:09,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4124403a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:09, skipping insertion in model container [2020-12-01 23:21:09,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:08" (2/3) ... [2020-12-01 23:21:09,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4124403a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:09, skipping insertion in model container [2020-12-01 23:21:09,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:09" (3/3) ... [2020-12-01 23:21:09,366 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-12-01 23:21:09,382 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:21:09,386 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:21:09,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:21:09,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:21:09,427 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:21:09,427 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:21:09,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:21:09,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:21:09,427 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:21:09,427 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:21:09,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:21:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-01 23:21:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:21:09,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:09,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:09,448 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:09,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-12-01 23:21:09,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:09,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694983291] [2020-12-01 23:21:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:09,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694983291] [2020-12-01 23:21:09,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:09,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:21:09,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552715208] [2020-12-01 23:21:09,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:21:09,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:09,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:21:09,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:21:09,647 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-01 23:21:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:09,665 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-12-01 23:21:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:21:09,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-01 23:21:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:09,675 INFO L225 Difference]: With dead ends: 38 [2020-12-01 23:21:09,675 INFO L226 Difference]: Without dead ends: 16 [2020-12-01 23:21:09,679 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 [2020-12-01 23:21:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-01 23:21:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-01 23:21:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-01 23:21:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-01 23:21:09,714 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-12-01 23:21:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:09,714 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-01 23:21:09,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:21:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-01 23:21:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:21:09,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:09,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:09,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:21:09,716 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:09,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-12-01 23:21:09,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:09,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916812796] [2020-12-01 23:21:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:09,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916812796] [2020-12-01 23:21:09,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:09,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 23:21:09,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499324916] [2020-12-01 23:21:09,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 23:21:09,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:09,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 23:21:09,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 23:21:09,892 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-01 23:21:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:09,907 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-12-01 23:21:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 23:21:09,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-01 23:21:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:09,908 INFO L225 Difference]: With dead ends: 24 [2020-12-01 23:21:09,909 INFO L226 Difference]: Without dead ends: 16 [2020-12-01 23:21:09,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 23:21:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-01 23:21:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-01 23:21:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-01 23:21:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-01 23:21:09,913 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-12-01 23:21:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:09,913 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-01 23:21:09,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 23:21:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-01 23:21:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 23:21:09,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:09,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:09,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:21:09,915 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:09,916 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-12-01 23:21:09,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:09,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697127919] [2020-12-01 23:21:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:10,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:10,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:10,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:21:10,171 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:21:10,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 23:21:10,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:21:10 BoogieIcfgContainer [2020-12-01 23:21:10,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:21:10,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:21:10,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:21:10,207 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:21:10,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:09" (3/4) ... [2020-12-01 23:21:10,211 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:21:10,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:21:10,214 INFO L168 Benchmark]: Toolchain (without parser) took 1682.62 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 29.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:10,215 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:10,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.92 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 28.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:10,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 26.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:10,218 INFO L168 Benchmark]: Boogie Preprocessor took 31.09 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 25.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:10,219 INFO L168 Benchmark]: RCFGBuilder took 462.07 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 32.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:10,220 INFO L168 Benchmark]: TraceAbstraction took 846.65 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 30.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:10,221 INFO L168 Benchmark]: Witness Printer took 5.36 ms. Allocated memory is still 56.6 MB. Free memory is still 29.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:10,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 46.1 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.92 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 28.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 26.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.09 ms. Allocated memory is still 46.1 MB. Free memory was 26.7 MB in the beginning and 25.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 462.07 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 25.3 MB in the beginning and 32.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 846.65 ms. Allocated memory is still 56.6 MB. Free memory was 31.9 MB in the beginning and 30.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.36 ms. Allocated memory is still 56.6 MB. Free memory is still 29.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:21:12,569 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-01 23:21:12,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:21:12,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:21:12,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:21:12,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:21:12,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:21:12,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:21:12,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:21:12,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:21:12,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:21:12,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:21:12,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:21:12,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:21:12,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:21:12,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:21:12,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:21:12,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:21:12,684 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:21:12,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:21:12,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:21:12,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:21:12,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:21:12,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:21:12,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:21:12,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:21:12,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:21:12,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:21:12,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:21:12,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:21:12,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:21:12,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:21:12,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:21:12,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:21:12,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:21:12,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:21:12,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:21:12,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:21:12,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:21:12,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:21:12,689 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:21:12,689 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:21:12,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:21:12,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:21:12,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:21:12,690 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-12-01 23:21:13,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:21:13,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:21:13,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:21:13,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:21:13,105 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:21:13,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-12-01 23:21:13,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2616dfeb6/ac097fa2d20145e4b4edbcd7af9fedda/FLAGfbe463684 [2020-12-01 23:21:13,714 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:21:13,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-12-01 23:21:13,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2616dfeb6/ac097fa2d20145e4b4edbcd7af9fedda/FLAGfbe463684 [2020-12-01 23:21:14,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2616dfeb6/ac097fa2d20145e4b4edbcd7af9fedda [2020-12-01 23:21:14,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:21:14,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:21:14,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:14,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:21:14,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:21:14,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d98c89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14, skipping insertion in model container [2020-12-01 23:21:14,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:21:14,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:21:14,282 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c[1563,1576] [2020-12-01 23:21:14,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:14,299 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:21:14,324 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c[1563,1576] [2020-12-01 23:21:14,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:14,348 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:21:14,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14 WrapperNode [2020-12-01 23:21:14,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:14,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:14,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:21:14,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:21:14,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:14,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:21:14,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:21:14,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:21:14,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... [2020-12-01 23:21:14,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:21:14,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:21:14,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:21:14,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:21:14,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:21:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:21:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:21:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:21:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:21:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:21:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:21:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:21:15,353 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:21:15,353 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 23:21:15,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:15 BoogieIcfgContainer [2020-12-01 23:21:15,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:21:15,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:21:15,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:21:15,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:21:15,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:21:14" (1/3) ... [2020-12-01 23:21:15,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3481c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:15, skipping insertion in model container [2020-12-01 23:21:15,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:14" (2/3) ... [2020-12-01 23:21:15,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3481c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:15, skipping insertion in model container [2020-12-01 23:21:15,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:15" (3/3) ... [2020-12-01 23:21:15,363 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-12-01 23:21:15,376 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:21:15,379 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:21:15,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:21:15,419 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:21:15,419 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:21:15,419 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:21:15,419 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:21:15,420 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:21:15,420 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:21:15,420 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:21:15,420 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:21:15,433 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-01 23:21:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:21:15,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:15,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:15,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-12-01 23:21:15,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:21:15,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149143109] [2020-12-01 23:21:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 23:21:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:21:15,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:15,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:21:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:15,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149143109] [2020-12-01 23:21:15,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:15,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:21:15,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917269409] [2020-12-01 23:21:15,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:21:15,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:21:15,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:21:15,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:21:15,647 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-01 23:21:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:15,666 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-12-01 23:21:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:21:15,667 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-01 23:21:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:15,676 INFO L225 Difference]: With dead ends: 38 [2020-12-01 23:21:15,677 INFO L226 Difference]: Without dead ends: 16 [2020-12-01 23:21:15,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:21:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-01 23:21:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-01 23:21:15,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-01 23:21:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-01 23:21:15,713 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-12-01 23:21:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:15,714 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-01 23:21:15,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:21:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-01 23:21:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:21:15,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:15,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:15,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:21:15,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:15,929 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-12-01 23:21:15,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:21:15,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079468297] [2020-12-01 23:21:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 23:21:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:16,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 23:21:16,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:16,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:21:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:16,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079468297] [2020-12-01 23:21:16,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:16,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-01 23:21:16,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365794358] [2020-12-01 23:21:16,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 23:21:16,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:21:16,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 23:21:16,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 23:21:16,104 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-01 23:21:16,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:16,121 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-12-01 23:21:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 23:21:16,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-01 23:21:16,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:16,123 INFO L225 Difference]: With dead ends: 24 [2020-12-01 23:21:16,123 INFO L226 Difference]: Without dead ends: 16 [2020-12-01 23:21:16,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 23:21:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-01 23:21:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-01 23:21:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-01 23:21:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-01 23:21:16,128 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-12-01 23:21:16,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:16,129 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-01 23:21:16,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 23:21:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-01 23:21:16,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 23:21:16,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:16,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:16,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:21:16,347 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:16,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-12-01 23:21:16,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:21:16,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204627995] [2020-12-01 23:21:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 23:21:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:16,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:16,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:16,716 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:21:16,716 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:21:16,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 23:21:16,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:21:16 BoogieIcfgContainer [2020-12-01 23:21:16,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:21:16,966 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:21:16,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:21:16,966 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:21:16,967 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:15" (3/4) ... [2020-12-01 23:21:16,969 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:21:17,021 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:21:17,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:21:17,024 INFO L168 Benchmark]: Toolchain (without parser) took 2957.35 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 26.9 MB in the beginning and 44.4 MB in the end (delta: -17.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:17,024 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:17,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.27 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 27.3 MB in the end (delta: -493.2 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:17,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.41 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 25.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:17,027 INFO L168 Benchmark]: Boogie Preprocessor took 34.68 ms. Allocated memory is still 50.3 MB. Free memory was 25.5 MB in the beginning and 24.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:17,027 INFO L168 Benchmark]: RCFGBuilder took 925.87 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 24.0 MB in the beginning and 36.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:17,028 INFO L168 Benchmark]: TraceAbstraction took 1608.81 ms. Allocated memory is still 67.1 MB. Free memory was 36.7 MB in the beginning and 46.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:17,029 INFO L168 Benchmark]: Witness Printer took 55.28 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 44.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:17,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.27 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 27.3 MB in the end (delta: -493.2 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.41 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 25.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.68 ms. Allocated memory is still 50.3 MB. Free memory was 25.5 MB in the beginning and 24.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 925.87 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 24.0 MB in the beginning and 36.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1608.81 ms. Allocated memory is still 67.1 MB. Free memory was 36.7 MB in the beginning and 46.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 55.28 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 44.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...