./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.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_1072d.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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ........................................................................................................................................................................................................................................................................................................ 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_1072d.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 965a8d1f86759d0c7cab56eb22958b9f714cfb2b .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:04:49,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:04:49,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:04:49,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:04:49,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:04:49,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:04:49,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:04:49,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:04:49,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:04:49,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:04:49,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:04:49,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:04:49,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:04:49,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:04:49,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:04:49,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:04:49,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:04:49,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:04:49,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:04:49,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:04:49,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:04:49,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:04:49,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:04:49,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:04:49,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:04:49,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:04:49,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:04:50,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:04:50,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:04:50,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:04:50,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:04:50,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:04:50,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:04:50,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:04:50,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:04:50,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:04:50,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:04:50,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:04:50,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:04:50,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:04:50,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:04:50,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:04:50,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:04:50,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:04:50,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:04:50,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:04:50,045 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:04:50,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:04:50,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:04:50,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:04:50,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:04:50,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:04:50,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:04:50,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:04:50,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:04:50,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:04:50,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:04:50,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:04:50,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:04:50,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:04:50,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:04:50,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:04:50,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:04:50,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:04:50,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:04:50,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:04:50,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:04:50,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:04:50,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:04:50,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:04:50,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:04:50,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-10-24 15:04:50,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:04:50,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:04:50,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:04:50,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:04:50,483 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:04:50,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-24 15:04:50,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f7774040/0b7e7f108b9e4e898ebd2ba532ba0338/FLAG396e9a81d [2020-10-24 15:04:51,222 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:04:51,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-24 15:04:51,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f7774040/0b7e7f108b9e4e898ebd2ba532ba0338/FLAG396e9a81d [2020-10-24 15:04:51,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f7774040/0b7e7f108b9e4e898ebd2ba532ba0338 [2020-10-24 15:04:51,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:04:51,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:04:51,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:51,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:04:51,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:04:51,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:51,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff24b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51, skipping insertion in model container [2020-10-24 15:04:51,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:51,579 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:04:51,605 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:04:51,861 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:51,871 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:04:51,905 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:51,924 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:04:51,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51 WrapperNode [2020-10-24 15:04:51,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:51,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:51,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:04:51,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:04:51,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:51,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:51,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:51,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:04:51,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:04:51,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:04:51,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:51,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:51,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:51,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:52,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:52,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:52,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... [2020-10-24 15:04:52,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:04:52,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:04:52,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:04:52,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:04:52,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:04:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:04:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:04:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:04:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:04:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:04:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:04:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:04:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:04:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:04:52,525 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:04:52,526 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:04:52,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:52 BoogieIcfgContainer [2020-10-24 15:04:52,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:04:52,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:04:52,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:04:52,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:04:52,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:04:51" (1/3) ... [2020-10-24 15:04:52,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d1f1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:52, skipping insertion in model container [2020-10-24 15:04:52,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:51" (2/3) ... [2020-10-24 15:04:52,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d1f1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:52, skipping insertion in model container [2020-10-24 15:04:52,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:52" (3/3) ... [2020-10-24 15:04:52,538 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-10-24 15:04:52,552 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:04:52,560 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:04:52,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:04:52,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:04:52,617 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:04:52,617 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:04:52,617 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:04:52,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:04:52,618 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:04:52,618 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:04:52,618 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:04:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-24 15:04:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:04:52,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:52,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:52,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-24 15:04:52,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:04:52,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089036480] [2020-10-24 15:04:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:04:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:04:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:52,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089036480] [2020-10-24 15:04:52,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:04:52,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:04:52,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543144030] [2020-10-24 15:04:52,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:04:52,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:04:52,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:04:52,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:04:52,959 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-24 15:04:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:04:52,989 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-24 15:04:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:04:52,992 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:04:52,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:04:53,016 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:04:53,016 INFO L226 Difference]: Without dead ends: 24 [2020-10-24 15:04:53,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:04:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-24 15:04:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-24 15:04:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-24 15:04:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-24 15:04:53,090 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-24 15:04:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:04:53,090 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-24 15:04:53,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:04:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-24 15:04:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:04:53,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:53,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:53,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:04:53,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:53,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:53,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-24 15:04:53,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:04:53,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668905893] [2020-10-24 15:04:53,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:04:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:04:53,338 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:04:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:04:53,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:04:53,455 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:04:53,456 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:04:53,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:04:53,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:04:53 BoogieIcfgContainer [2020-10-24 15:04:53,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:04:53,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:04:53,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:04:53,524 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:04:53,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:52" (3/4) ... [2020-10-24 15:04:53,529 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:04:53,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:04:53,536 INFO L168 Benchmark]: Toolchain (without parser) took 1987.73 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 25.0 MB in the beginning and 28.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:53,537 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:53,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.77 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 25.0 MB in the end (delta: -611.3 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:53,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.16 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 23.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:53,541 INFO L168 Benchmark]: Boogie Preprocessor took 42.57 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 21.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:53,543 INFO L168 Benchmark]: RCFGBuilder took 507.21 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 21.3 MB in the beginning and 39.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:53,544 INFO L168 Benchmark]: TraceAbstraction took 992.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 28.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:04:53,546 INFO L168 Benchmark]: Witness Printer took 6.02 ms. Allocated memory is still 60.8 MB. Free memory is still 28.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:04:53,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 48.2 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 34.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.77 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 25.0 MB in the end (delta: -611.3 kB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.16 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 23.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.57 ms. Allocated memory is still 48.2 MB. Free memory was 23.0 MB in the beginning and 21.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 507.21 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 21.3 MB in the beginning and 39.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 992.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 28.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.02 ms. Allocated memory is still 60.8 MB. Free memory is still 28.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 51, overapproximation of bitwiseOr at line 74, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:04:56,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:04:56,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:04:56,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:04:56,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:04:56,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:04:56,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:04:56,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:04:56,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:04:56,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:04:56,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:04:56,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:04:56,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:04:56,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:04:56,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:04:56,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:04:56,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:04:56,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:04:56,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:04:56,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:04:56,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:04:56,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:04:56,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:04:56,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:04:56,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:04:56,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:04:56,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:04:56,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:04:56,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:04:56,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:04:56,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:04:56,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:04:56,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:04:56,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:04:56,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:04:56,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:04:56,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:04:56,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:04:56,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:04:56,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:04:56,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:04:56,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:04:56,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:04:56,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:04:56,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:04:56,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:04:56,364 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:04:56,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:04:56,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:04:56,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:04:56,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:04:56,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:04:56,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:04:56,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:04:56,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:04:56,366 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:04:56,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:04:56,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:04:56,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:04:56,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:04:56,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:04:56,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:04:56,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:04:56,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:04:56,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:04:56,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:04:56,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:04:56,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:04:56,370 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:04:56,371 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:04:56,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:04:56,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:04:56,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:04:56,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-10-24 15:04:56,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:04:56,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:04:56,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:04:56,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:04:56,862 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:04:56,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-24 15:04:56,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32934fc1f/1e7d3dee0069429b9d584a0cc2a29b7c/FLAG97a78fc61 [2020-10-24 15:04:57,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:04:57,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-10-24 15:04:57,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32934fc1f/1e7d3dee0069429b9d584a0cc2a29b7c/FLAG97a78fc61 [2020-10-24 15:04:57,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32934fc1f/1e7d3dee0069429b9d584a0cc2a29b7c [2020-10-24 15:04:57,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:04:57,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:04:57,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:57,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:04:57,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:04:57,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:57" (1/1) ... [2020-10-24 15:04:57,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad16884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:57, skipping insertion in model container [2020-10-24 15:04:57,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:57" (1/1) ... [2020-10-24 15:04:57,989 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:04:58,015 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:04:58,211 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:58,229 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:04:58,269 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:58,292 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:04:58,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58 WrapperNode [2020-10-24 15:04:58,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:58,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:58,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:04:58,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:04:58,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:58,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:04:58,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:04:58,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:04:58,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... [2020-10-24 15:04:58,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:04:58,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:04:58,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:04:58,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:04:58,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:04:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:04:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 15:04:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:04:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:04:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:04:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:04:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:04:58,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:04:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:04:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:04:59,223 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:04:59,224 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:04:59,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:59 BoogieIcfgContainer [2020-10-24 15:04:59,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:04:59,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:04:59,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:04:59,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:04:59,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:04:57" (1/3) ... [2020-10-24 15:04:59,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f9f73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:59, skipping insertion in model container [2020-10-24 15:04:59,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:58" (2/3) ... [2020-10-24 15:04:59,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f9f73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:59, skipping insertion in model container [2020-10-24 15:04:59,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:59" (3/3) ... [2020-10-24 15:04:59,236 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-10-24 15:04:59,257 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:04:59,263 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:04:59,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:04:59,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:04:59,310 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:04:59,310 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:04:59,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:04:59,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:04:59,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:04:59,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:04:59,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:04:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-24 15:04:59,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:04:59,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:59,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:59,335 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-10-24 15:04:59,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:04:59,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446459747] [2020-10-24 15:04:59,357 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 15:05:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:00,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:05:00,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:05:00,508 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 15:05:00,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:05:00,514 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 15:05:00,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446459747] [2020-10-24 15:05:00,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:00,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:05:00,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526344632] [2020-10-24 15:05:00,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:05:00,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:05:00,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:05:00,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:05:00,548 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-10-24 15:05:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:00,567 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-10-24 15:05:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:05:00,569 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:05:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:00,580 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:05:00,580 INFO L226 Difference]: Without dead ends: 24 [2020-10-24 15:05:00,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:05:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-24 15:05:00,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-24 15:05:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-24 15:05:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-24 15:05:00,639 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-10-24 15:05:00,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:00,640 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-24 15:05:00,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:05:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-24 15:05:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:05:00,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:00,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:00,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:05:00,851 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:00,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-10-24 15:05:00,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:05:00,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321300389] [2020-10-24 15:05:00,855 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 15:05:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:05:02,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:05:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:05:03,271 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:05:03,428 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:05:03,429 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:05:03,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:05:03,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:05:03 BoogieIcfgContainer [2020-10-24 15:05:03,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:05:03,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:05:03,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:05:03,689 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:05:03,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:59" (3/4) ... [2020-10-24 15:05:03,692 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:05:03,749 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:05:03,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:05:03,752 INFO L168 Benchmark]: Toolchain (without parser) took 5800.14 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 15.7 MB in the beginning and 28.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:03,752 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 39.8 MB. Free memory was 25.0 MB in the beginning and 25.0 MB in the end (delta: 23.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:03,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.76 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.1 MB in the beginning and 20.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:03,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.07 ms. Allocated memory is still 48.2 MB. Free memory was 20.8 MB in the beginning and 30.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:03,755 INFO L168 Benchmark]: Boogie Preprocessor took 42.65 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 28.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:03,756 INFO L168 Benchmark]: RCFGBuilder took 828.39 ms. Allocated memory is still 48.2 MB. Free memory was 28.7 MB in the beginning and 19.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:03,757 INFO L168 Benchmark]: TraceAbstraction took 4459.54 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 19.1 MB in the beginning and 31.2 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:05:03,757 INFO L168 Benchmark]: Witness Printer took 60.76 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 28.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:05:03,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 39.8 MB. Free memory was 25.0 MB in the beginning and 25.0 MB in the end (delta: 23.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.76 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 15.1 MB in the beginning and 20.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.07 ms. Allocated memory is still 48.2 MB. Free memory was 20.8 MB in the beginning and 30.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.65 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 28.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 828.39 ms. Allocated memory is still 48.2 MB. Free memory was 28.7 MB in the beginning and 19.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4459.54 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 19.1 MB in the beginning and 31.2 MB in the end (delta: -12.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 60.76 ms. Allocated memory is still 58.7 MB. Free memory was 31.2 MB in the beginning and 28.8 MB in the end (delta: 2.4 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: [L86] EXPR 1.0 [L86] EXPR -1.0 [L86] EXPR 0.0 [L86] EXPR -1.0 / 0.0 [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] EXPR x + x [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 44 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...