./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 ........................................................................................................................................................................................................................................................................................................................ 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 .............................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-2880296 [2020-12-02 15:33:56,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:33:56,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:33:56,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:33:56,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:33:56,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:33:56,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:33:56,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:33:56,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:33:56,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:33:56,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:33:56,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:33:56,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:33:56,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:33:56,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:33:56,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:33:56,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:33:56,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:33:56,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:33:56,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:33:56,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:33:56,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:33:56,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:33:56,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:33:56,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:33:56,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:33:56,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:33:56,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:33:56,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:33:56,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:33:56,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:33:56,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:33:56,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:33:56,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:33:56,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:33:56,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:33:56,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:33:56,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:33:56,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:33:56,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:33:56,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:33:56,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:33:56,852 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:33:56,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:33:56,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:33:56,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:33:56,858 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:33:56,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:33:56,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:33:56,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:33:56,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:33:56,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:33:56,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:33:56,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:33:56,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:33:56,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:33:56,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:33:56,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:33:56,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:33:56,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:33:56,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:33:56,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:33:56,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:33:56,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:33:56,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:33:56,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:33:56,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:33:56,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:33:56,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:33:56,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:33:56,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:33:56,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-12-02 15:33:57,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:33:57,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:33:57,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:33:57,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:33:57,374 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:33:57,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-12-02 15:33:57,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272c8079d/098549d26e404d1091cc31acaaa8d987/FLAGecff87d8a [2020-12-02 15:33:58,184 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:33:58,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-12-02 15:33:58,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272c8079d/098549d26e404d1091cc31acaaa8d987/FLAGecff87d8a [2020-12-02 15:33:58,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/272c8079d/098549d26e404d1091cc31acaaa8d987 [2020-12-02 15:33:58,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:33:58,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:33:58,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:58,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:33:58,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:33:58,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:58,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26895b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58, skipping insertion in model container [2020-12-02 15:33:58,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:58,553 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:33:58,588 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:33:58,832 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-02 15:33:58,835 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:58,846 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:33:58,914 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-02 15:33:58,915 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:58,947 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:33:58,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58 WrapperNode [2020-12-02 15:33:58,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:58,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:58,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:33:58,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:33:58,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:59,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:33:59,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:33:59,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:33:59,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (1/1) ... [2020-12-02 15:33:59,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:33:59,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:33:59,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:33:59,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:33:59,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (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 [2020-12-02 15:33:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:33:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:33:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:33:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:33:59,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:33:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:33:59,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:33:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:33:59,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-02 15:33:59,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:34:00,074 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:34:00,075 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-02 15:34:00,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:00 BoogieIcfgContainer [2020-12-02 15:34:00,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:34:00,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:34:00,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:34:00,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:34:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:33:58" (1/3) ... [2020-12-02 15:34:00,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae5b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:00, skipping insertion in model container [2020-12-02 15:34:00,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:58" (2/3) ... [2020-12-02 15:34:00,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae5b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:00, skipping insertion in model container [2020-12-02 15:34:00,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:00" (3/3) ... [2020-12-02 15:34:00,090 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-12-02 15:34:00,109 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:34:00,118 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:34:00,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:34:00,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:34:00,180 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:34:00,180 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:34:00,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:34:00,181 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:34:00,181 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:34:00,181 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:34:00,181 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:34:00,209 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-02 15:34:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:34:00,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:00,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:00,219 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:00,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-02 15:34:00,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:34:00,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586493658] [2020-12-02 15:34:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:34:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:34:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:34:00,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586493658] [2020-12-02 15:34:00,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:34:00,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:34:00,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861006030] [2020-12-02 15:34:00,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:34:00,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:34:00,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:34:00,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:34:00,428 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-02 15:34:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:34:00,461 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-02 15:34:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:34:00,462 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:34:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:34:00,473 INFO L225 Difference]: With dead ends: 118 [2020-12-02 15:34:00,474 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 15:34:00,478 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 [2020-12-02 15:34:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 15:34:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-02 15:34:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-02 15:34:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-02 15:34:00,523 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-02 15:34:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:34:00,524 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-02 15:34:00,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:34:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-02 15:34:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 15:34:00,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:00,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:00,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:34:00,527 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:00,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:00,528 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-02 15:34:00,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:34:00,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973978055] [2020-12-02 15:34:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:34:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:00,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:00,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:00,809 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:34:00,810 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:34:00,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:34:00,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:34:00 BoogieIcfgContainer [2020-12-02 15:34:00,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:34:00,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:34:00,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:34:00,853 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:34:00,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:00" (3/4) ... [2020-12-02 15:34:00,858 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:34:00,858 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:34:00,861 INFO L168 Benchmark]: Toolchain (without parser) took 2331.97 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.5 MB in the beginning and 45.5 MB in the end (delta: -17.0 MB). Peak memory consumption was 38.8 kB. Max. memory is 16.1 GB. [2020-12-02 15:34:00,862 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 35.0 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:00,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.59 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 29.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:00,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.30 ms. Allocated memory is still 52.4 MB. Free memory was 29.9 MB in the beginning and 27.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:00,866 INFO L168 Benchmark]: Boogie Preprocessor took 98.60 ms. Allocated memory is still 52.4 MB. Free memory was 27.3 MB in the beginning and 25.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:00,867 INFO L168 Benchmark]: RCFGBuilder took 928.87 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 25.1 MB in the beginning and 34.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:00,868 INFO L168 Benchmark]: TraceAbstraction took 772.77 ms. Allocated memory is still 69.2 MB. Free memory was 34.2 MB in the beginning and 45.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:00,868 INFO L168 Benchmark]: Witness Printer took 6.37 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 45.5 MB in the end (delta: 410.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:00,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 52.4 MB. Free memory was 35.0 MB in the beginning and 35.0 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 419.59 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 29.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.30 ms. Allocated memory is still 52.4 MB. Free memory was 29.9 MB in the beginning and 27.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.60 ms. Allocated memory is still 52.4 MB. Free memory was 27.3 MB in the beginning and 25.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 928.87 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 25.1 MB in the beginning and 34.6 MB in the end (delta: -9.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 772.77 ms. Allocated memory is still 69.2 MB. Free memory was 34.2 MB in the beginning and 45.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.37 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 45.5 MB in the end (delta: 410.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLE_SMToperation at line 22, overapproximation of bitwiseOr at line 46, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 47, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L191] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 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=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 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 0.2.0-2880296 [2020-12-02 15:34:03,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:34:03,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:34:03,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:34:03,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:34:03,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:34:03,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:34:03,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:34:03,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:34:03,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:34:03,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:34:03,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:34:03,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:34:03,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:34:03,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:34:03,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:34:03,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:34:03,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:34:03,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:34:03,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:34:03,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:34:03,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:34:03,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:34:03,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:34:03,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:34:03,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:34:03,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:34:03,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:34:03,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:34:03,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:34:03,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:34:03,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:34:03,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:34:03,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:34:03,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:34:03,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:34:03,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:34:03,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:34:03,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:34:03,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:34:03,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:34:03,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:34:03,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:34:03,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:34:03,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:34:03,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:34:03,819 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:34:03,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:34:03,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:34:03,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:34:03,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:34:03,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:34:03,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:34:03,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:34:03,823 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:34:03,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:34:03,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:34:03,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:34:03,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:34:03,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:34:03,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:34:03,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:34:03,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:34:03,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:34:03,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:34:03,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:34:03,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:34:03,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:34:03,828 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:34:03,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:34:03,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:34:03,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:34:03,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:34:03,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-12-02 15:34:04,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:34:04,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:34:04,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:34:04,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:34:04,331 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:34:04,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-12-02 15:34:04,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15997ee51/96565c63cc484144ba9c966e2b287140/FLAGc6c5b37be [2020-12-02 15:34:05,073 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:34:05,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-12-02 15:34:05,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15997ee51/96565c63cc484144ba9c966e2b287140/FLAGc6c5b37be [2020-12-02 15:34:05,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15997ee51/96565c63cc484144ba9c966e2b287140 [2020-12-02 15:34:05,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:34:05,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:34:05,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:05,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:34:05,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:34:05,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:05,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae62693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05, skipping insertion in model container [2020-12-02 15:34:05,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:05,445 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:34:05,492 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:34:05,785 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-02 15:34:05,794 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:05,814 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:34:05,904 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-02 15:34:05,905 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:05,932 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:34:05,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05 WrapperNode [2020-12-02 15:34:05,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:05,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:05,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:34:05,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:34:05,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:05,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:06,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:34:06,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:34:06,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:34:06,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (1/1) ... [2020-12-02 15:34:06,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:34:06,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:34:06,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:34:06,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:34:06,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (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 [2020-12-02 15:34:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:34:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:34:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:34:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:34:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:34:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-02 15:34:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:34:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:34:06,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:34:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:34:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:34:11,537 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:34:11,538 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-02 15:34:11,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:11 BoogieIcfgContainer [2020-12-02 15:34:11,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:34:11,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:34:11,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:34:11,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:34:11,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:34:05" (1/3) ... [2020-12-02 15:34:11,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2998ed2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:11, skipping insertion in model container [2020-12-02 15:34:11,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:05" (2/3) ... [2020-12-02 15:34:11,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2998ed2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:11, skipping insertion in model container [2020-12-02 15:34:11,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:11" (3/3) ... [2020-12-02 15:34:11,551 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-12-02 15:34:11,568 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:34:11,573 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:34:11,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:34:11,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:34:11,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:34:11,614 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:34:11,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:34:11,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:34:11,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:34:11,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:34:11,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:34:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-02 15:34:11,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:34:11,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:11,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:11,641 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:11,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-02 15:34:11,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:34:11,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711554859] [2020-12-02 15:34:11,664 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 [2020-12-02 15:34:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:34:13,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:34:13,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:34:13,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:34:13,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:34:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:34:13,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711554859] [2020-12-02 15:34:13,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:34:13,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:34:13,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306668591] [2020-12-02 15:34:13,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:34:13,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:34:13,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:34:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:34:13,870 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-02 15:34:13,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:34:13,896 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-02 15:34:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:34:13,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:34:13,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:34:13,909 INFO L225 Difference]: With dead ends: 118 [2020-12-02 15:34:13,909 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 15:34:13,913 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 [2020-12-02 15:34:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 15:34:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-02 15:34:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-02 15:34:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-02 15:34:13,961 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-02 15:34:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:34:13,962 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-02 15:34:13,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:34:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-02 15:34:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 15:34:13,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:13,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:14,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:34:14,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:14,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:14,169 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-02 15:34:14,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:34:14,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541017957] [2020-12-02 15:34:14,177 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 [2020-12-02 15:34:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:16,750 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:19,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:19,665 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:34:19,665 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:34:19,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:34:19,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:34:19 BoogieIcfgContainer [2020-12-02 15:34:19,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:34:19,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:34:19,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:34:19,912 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:34:19,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:11" (3/4) ... [2020-12-02 15:34:19,915 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:34:19,982 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:34:19,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:34:19,985 INFO L168 Benchmark]: Toolchain (without parser) took 14567.52 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.2 MB in the beginning and 20.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:19,986 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory is still 21.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:19,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.97 ms. Allocated memory is still 52.4 MB. Free memory was 37.6 MB in the beginning and 35.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:19,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.82 ms. Allocated memory is still 52.4 MB. Free memory was 35.8 MB in the beginning and 33.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:19,988 INFO L168 Benchmark]: Boogie Preprocessor took 55.57 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 31.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:19,989 INFO L168 Benchmark]: RCFGBuilder took 5461.89 ms. Allocated memory is still 52.4 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 47.8 kB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:19,990 INFO L168 Benchmark]: TraceAbstraction took 8369.01 ms. Allocated memory is still 52.4 MB. Free memory was 30.3 MB in the beginning and 23.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:19,991 INFO L168 Benchmark]: Witness Printer took 69.83 ms. Allocated memory is still 52.4 MB. Free memory was 23.3 MB in the beginning and 20.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:20,001 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory is still 21.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 523.97 ms. Allocated memory is still 52.4 MB. Free memory was 37.6 MB in the beginning and 35.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.82 ms. Allocated memory is still 52.4 MB. Free memory was 35.8 MB in the beginning and 33.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.57 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 31.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5461.89 ms. Allocated memory is still 52.4 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 47.8 kB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8369.01 ms. Allocated memory is still 52.4 MB. Free memory was 30.3 MB in the beginning and 23.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 69.83 ms. Allocated memory is still 52.4 MB. Free memory was 23.3 MB in the beginning and 20.6 MB in the end (delta: 2.7 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: 191]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] EXPR 1.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L20] EXPR 1.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L21] EXPR 0.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L22] EXPR 0.0 [L22] EXPR -0.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L21] 0.0 [L22] EXPR 0.0 [L22] -0.0 VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L182] EXPR 1.0 [L182] EXPR 0.0 [L182] EXPR 1.0 / 0.0 [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] EXPR x * y [L47] EXPR x * y [L47] EXPR (x * y) / (x * y) [L47] return (x * y) / (x * y); [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L191] reach_error() VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 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=60occurred 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, 4.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 60 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...