./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121a.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_1121a.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 b1ef2080ffd97f82ac51854e7d9813eba864fd0a ................................................................................................................................................................................................................................................................................................................ 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_1121a.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 b1ef2080ffd97f82ac51854e7d9813eba864fd0a .......................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:33:09,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:33:09,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:33:09,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:33:09,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:33:09,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:33:09,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:33:09,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:33:09,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:33:09,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:33:09,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:33:09,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:33:09,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:33:09,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:33:09,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:33:09,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:33:09,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:33:09,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:33:09,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:33:09,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:33:09,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:33:09,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:33:09,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:33:09,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:33:09,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:33:09,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:33:09,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:33:09,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:33:09,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:33:09,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:33:09,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:33:09,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:33:09,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:33:09,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:33:09,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:33:09,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:33:09,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:33:09,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:33:09,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:33:09,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:33:09,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:33:09,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:33:09,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:33:09,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:33:09,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:33:09,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:33:09,978 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:33:09,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:33:09,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:33:09,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:33:09,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:33:09,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:33:09,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:33:09,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:33:09,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:33:09,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:33:09,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:33:09,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:33:09,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:33:09,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:33:09,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:33:09,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:33:09,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:33:09,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:33:09,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:33:09,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:33:09,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:33:09,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:33:09,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:33:09,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:33:09,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:33:09,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-12-02 15:33:10,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:33:10,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:33:10,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:33:10,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:33:10,446 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:33:10,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121a.c [2020-12-02 15:33:10,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30ee0f36/0b2d98669963437b8daace9342a3669a/FLAGe8c2266db [2020-12-02 15:33:11,165 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:33:11,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1121a.c [2020-12-02 15:33:11,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30ee0f36/0b2d98669963437b8daace9342a3669a/FLAGe8c2266db [2020-12-02 15:33:11,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f30ee0f36/0b2d98669963437b8daace9342a3669a [2020-12-02 15:33:11,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:33:11,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:33:11,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:11,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:33:11,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:33:11,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:11" (1/1) ... [2020-12-02 15:33:11,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@904b0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:11, skipping insertion in model container [2020-12-02 15:33:11,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:11" (1/1) ... [2020-12-02 15:33:11,528 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:33:11,574 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:33:11,933 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_1121a.c[3883,3896] [2020-12-02 15:33:11,936 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:11,946 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:33:12,015 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_1121a.c[3883,3896] [2020-12-02 15:33:12,016 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:12,046 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:33:12,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12 WrapperNode [2020-12-02 15:33:12,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:12,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:12,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:33:12,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:33:12,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:12,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:33:12,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:33:12,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:33:12,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (1/1) ... [2020-12-02 15:33:12,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:33:12,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:33:12,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:33:12,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:33:12,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (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 15:33:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:33:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:33:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:33:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:33:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:33:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:33:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:33:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:33:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-02 15:33:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:33:12,982 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:33:12,983 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 15:33:12,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:12 BoogieIcfgContainer [2020-12-02 15:33:12,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:33:12,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:33:12,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:33:12,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:33:12,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:33:11" (1/3) ... [2020-12-02 15:33:12,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c0855e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:12, skipping insertion in model container [2020-12-02 15:33:12,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:12" (2/3) ... [2020-12-02 15:33:12,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c0855e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:12, skipping insertion in model container [2020-12-02 15:33:12,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:12" (3/3) ... [2020-12-02 15:33:12,994 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-12-02 15:33:13,011 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:33:13,015 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:33:13,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:33:13,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:33:13,053 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:33:13,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:33:13,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:33:13,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:33:13,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:33:13,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:33:13,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:33:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-02 15:33:13,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 15:33:13,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:13,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:13,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:13,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-02 15:33:13,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:33:13,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677388943] [2020-12-02 15:33:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:33:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:33:13,287 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 15:33:13,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677388943] [2020-12-02 15:33:13,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:33:13,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:33:13,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729759145] [2020-12-02 15:33:13,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:33:13,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:33:13,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:33:13,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:33:13,317 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-02 15:33:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:33:13,346 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-02 15:33:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:33:13,348 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 15:33:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:33:13,361 INFO L225 Difference]: With dead ends: 108 [2020-12-02 15:33:13,361 INFO L226 Difference]: Without dead ends: 52 [2020-12-02 15:33:13,365 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 15:33:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-02 15:33:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-02 15:33:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-02 15:33:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-02 15:33:13,415 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-02 15:33:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:33:13,415 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-02 15:33:13,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:33:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-02 15:33:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:33:13,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:13,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:13,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:33:13,417 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:13,419 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-02 15:33:13,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:33:13,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517311992] [2020-12-02 15:33:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:33:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:13,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:13,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:13,744 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:33:13,744 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:33:13,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:33:13,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:33:13 BoogieIcfgContainer [2020-12-02 15:33:13,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:33:13,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:33:13,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:33:13,809 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:33:13,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:12" (3/4) ... [2020-12-02 15:33:13,814 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:33:13,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:33:13,821 INFO L168 Benchmark]: Toolchain (without parser) took 2314.08 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 37.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:13,822 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:13,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.92 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 24.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:13,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.74 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 33.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:13,826 INFO L168 Benchmark]: Boogie Preprocessor took 54.36 ms. Allocated memory is still 50.3 MB. Free memory was 33.9 MB in the beginning and 31.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:13,828 INFO L168 Benchmark]: RCFGBuilder took 802.54 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.7 MB in the beginning and 35.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:13,829 INFO L168 Benchmark]: TraceAbstraction took 820.41 ms. Allocated memory is still 60.8 MB. Free memory was 35.0 MB in the beginning and 37.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:13,831 INFO L168 Benchmark]: Witness Printer took 6.32 ms. Allocated memory is still 60.8 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:13,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 544.92 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 24.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.74 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 33.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.36 ms. Allocated memory is still 50.3 MB. Free memory was 33.9 MB in the beginning and 31.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 802.54 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.7 MB in the beginning and 35.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 820.41 ms. Allocated memory is still 60.8 MB. Free memory was 35.0 MB in the beginning and 37.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.32 ms. Allocated memory is still 60.8 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 177]: 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 18, 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}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [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}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 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: 81 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=55occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 15:33:16,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:33:16,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:33:16,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:33:16,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:33:16,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:33:16,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:33:16,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:33:16,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:33:16,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:33:16,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:33:16,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:33:16,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:33:16,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:33:16,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:33:16,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:33:16,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:33:16,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:33:16,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:33:16,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:33:16,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:33:16,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:33:16,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:33:16,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:33:16,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:33:16,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:33:16,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:33:16,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:33:16,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:33:16,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:33:16,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:33:16,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:33:16,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:33:16,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:33:16,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:33:16,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:33:16,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:33:16,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:33:16,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:33:16,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:33:16,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:33:16,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:33:16,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:33:16,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:33:16,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:33:16,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:33:16,744 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:33:16,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:33:16,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:33:16,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:33:16,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:33:16,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:33:16,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:33:16,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:33:16,746 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:33:16,746 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:33:16,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:33:16,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:33:16,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:33:16,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:33:16,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:33:16,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:33:16,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:33:16,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:33:16,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:33:16,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:33:16,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:33:16,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:33:16,749 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:33:16,749 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:33:16,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:33:16,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:33:16,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:33:16,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-12-02 15:33:17,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:33:17,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:33:17,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:33:17,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:33:17,227 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:33:17,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1121a.c [2020-12-02 15:33:17,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58ddad000/700766906fae4aed9b181848d4dc6b3f/FLAGc9c8f6bdd [2020-12-02 15:33:17,905 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:33:17,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1121a.c [2020-12-02 15:33:17,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58ddad000/700766906fae4aed9b181848d4dc6b3f/FLAGc9c8f6bdd [2020-12-02 15:33:18,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58ddad000/700766906fae4aed9b181848d4dc6b3f [2020-12-02 15:33:18,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:33:18,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:33:18,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:18,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:33:18,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:33:18,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763ca811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18, skipping insertion in model container [2020-12-02 15:33:18,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,313 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:33:18,361 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:33:18,607 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_1121a.c[3883,3896] [2020-12-02 15:33:18,611 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:18,628 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:33:18,709 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_1121a.c[3883,3896] [2020-12-02 15:33:18,710 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:18,756 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:33:18,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18 WrapperNode [2020-12-02 15:33:18,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:18,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:18,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:33:18,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:33:18,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:18,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:33:18,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:33:18,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:33:18,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (1/1) ... [2020-12-02 15:33:18,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:33:18,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:33:18,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:33:18,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:33:18,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (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 15:33:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:33:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:33:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:33:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:33:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:33:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-02 15:33:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:33:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:33:19,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:33:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:33:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:33:24,516 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:33:24,517 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-02 15:33:24,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:24 BoogieIcfgContainer [2020-12-02 15:33:24,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:33:24,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:33:24,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:33:24,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:33:24,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:33:18" (1/3) ... [2020-12-02 15:33:24,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eceb87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:24, skipping insertion in model container [2020-12-02 15:33:24,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:18" (2/3) ... [2020-12-02 15:33:24,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eceb87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:24, skipping insertion in model container [2020-12-02 15:33:24,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:24" (3/3) ... [2020-12-02 15:33:24,528 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-12-02 15:33:24,544 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:33:24,547 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:33:24,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:33:24,611 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:33:24,611 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:33:24,611 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:33:24,611 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:33:24,611 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:33:24,611 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:33:24,612 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:33:24,612 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:33:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-02 15:33:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 15:33:24,631 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:24,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:24,632 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:24,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:24,638 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-02 15:33:24,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:33:24,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191664098] [2020-12-02 15:33:24,655 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 15:33:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:33:25,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:33:25,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:33:25,925 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 15:33:25,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:33:25,946 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 15:33:25,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191664098] [2020-12-02 15:33:25,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:33:25,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:33:25,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66757496] [2020-12-02 15:33:25,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:33:25,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:33:25,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:33:25,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:33:25,991 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-02 15:33:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:33:26,023 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-02 15:33:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:33:26,025 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 15:33:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:33:26,036 INFO L225 Difference]: With dead ends: 108 [2020-12-02 15:33:26,037 INFO L226 Difference]: Without dead ends: 52 [2020-12-02 15:33:26,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 15:33:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-02 15:33:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-02 15:33:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-02 15:33:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-02 15:33:26,085 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-02 15:33:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:33:26,086 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-02 15:33:26,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:33:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-02 15:33:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:33:26,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:26,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:26,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:33:26,299 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:26,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:26,302 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-02 15:33:26,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:33:26,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517175914] [2020-12-02 15:33:26,303 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 15:33:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:33:28,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-02 15:33:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:33:31,081 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_fmod_double_#t~nondet20_6| (_ BitVec 64)) (ULTIMATE.start_fmod_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_fmod_double_#t~nondet19_6| (_ BitVec 64)) (ULTIMATE.start_fmod_double_~y (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) ULTIMATE.start_fmod_double_~y) ((_ extract 62 52) ULTIMATE.start_fmod_double_~y) ((_ extract 51 0) ULTIMATE.start_fmod_double_~y)))) (let ((.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|))) (.cse3 (fp.mul roundNearestTiesToEven (fp ((_ extract 63 63) ULTIMATE.start_fmod_double_~x) ((_ extract 62 52) ULTIMATE.start_fmod_double_~x) ((_ extract 51 0) ULTIMATE.start_fmod_double_~x)) .cse0)) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|)))) (and (= (_ +zero 11 53) .cse0) (= (fp ((_ extract 63 63) |c_ULTIMATE.start_fmod_double_#res|) ((_ extract 62 52) |c_ULTIMATE.start_fmod_double_#res|) ((_ extract 51 0) |c_ULTIMATE.start_fmod_double_#res|)) (fp.div roundNearestTiesToEven .cse1 .cse2)) (= .cse3 .cse2) (= .cse3 .cse1))))) is different from false [2020-12-02 15:33:31,867 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 15:33:31,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-02 15:33:34,753 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 15:33:34,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:33:38,246 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_fmod_double_#t~nondet20_6| (_ BitVec 64)) (ULTIMATE.start_fmod_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_fmod_double_#t~nondet19_6| (_ BitVec 64)) (|v_ULTIMATE.start_fmod_double_#res_10| (_ BitVec 64))) (let ((.cse1 (fp.mul c_~CRM (fp ((_ extract 63 63) ULTIMATE.start_fmod_double_~x) ((_ extract 62 52) ULTIMATE.start_fmod_double_~x) ((_ extract 51 0) ULTIMATE.start_fmod_double_~x)) (fp ((_ extract 63 63) c_ULTIMATE.start_fmod_double_~y) ((_ extract 62 52) c_ULTIMATE.start_fmod_double_~y) ((_ extract 51 0) c_ULTIMATE.start_fmod_double_~y)))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#res_10|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#res_10|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#res_10|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|)))) (or (not (fp.eq .cse0 .cse0)) (not (= .cse1 .cse2)) (not (= .cse3 .cse1)) (not (= .cse0 (fp.div c_~CRM .cse2 .cse3)))))) is different from true [2020-12-02 15:33:40,710 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 15:33:40,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517175914] [2020-12-02 15:33:40,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:33:40,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-02 15:33:40,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625057389] [2020-12-02 15:33:40,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 15:33:40,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:33:40,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 15:33:40,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=56, Unknown=2, NotChecked=30, Total=110 [2020-12-02 15:33:40,715 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-12-02 15:33:45,021 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_fmod_double_#t~nondet20_6| (_ BitVec 64)) (ULTIMATE.start_fmod_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_fmod_double_#t~nondet19_6| (_ BitVec 64)) (|v_ULTIMATE.start_fmod_double_#res_10| (_ BitVec 64))) (let ((.cse1 (fp.mul c_~CRM (fp ((_ extract 63 63) ULTIMATE.start_fmod_double_~x) ((_ extract 62 52) ULTIMATE.start_fmod_double_~x) ((_ extract 51 0) ULTIMATE.start_fmod_double_~x)) (fp ((_ extract 63 63) c_ULTIMATE.start_fmod_double_~y) ((_ extract 62 52) c_ULTIMATE.start_fmod_double_~y) ((_ extract 51 0) c_ULTIMATE.start_fmod_double_~y)))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#res_10|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#res_10|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#res_10|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|)))) (or (not (fp.eq .cse0 .cse0)) (not (= .cse1 .cse2)) (not (= .cse3 .cse1)) (not (= .cse0 (fp.div c_~CRM .cse2 .cse3)))))) (= (_ +zero 11 53) (fp ((_ extract 63 63) c_ULTIMATE.start_fmod_double_~y) ((_ extract 62 52) c_ULTIMATE.start_fmod_double_~y) ((_ extract 51 0) c_ULTIMATE.start_fmod_double_~y))) (= roundNearestTiesToEven c_~CRM)) is different from true [2020-12-02 15:33:47,292 WARN L838 $PredicateComparison]: unable to prove that (and (not (let ((.cse0 (fp ((_ extract 63 63) |c_ULTIMATE.start_fmod_double_#res|) ((_ extract 62 52) |c_ULTIMATE.start_fmod_double_#res|) ((_ extract 51 0) |c_ULTIMATE.start_fmod_double_#res|)))) (fp.eq .cse0 .cse0))) (exists ((|v_ULTIMATE.start_fmod_double_#t~nondet20_6| (_ BitVec 64)) (ULTIMATE.start_fmod_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_fmod_double_#t~nondet19_6| (_ BitVec 64)) (ULTIMATE.start_fmod_double_~y (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) ULTIMATE.start_fmod_double_~y) ((_ extract 62 52) ULTIMATE.start_fmod_double_~y) ((_ extract 51 0) ULTIMATE.start_fmod_double_~y)))) (let ((.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet20_6|))) (.cse4 (fp.mul roundNearestTiesToEven (fp ((_ extract 63 63) ULTIMATE.start_fmod_double_~x) ((_ extract 62 52) ULTIMATE.start_fmod_double_~x) ((_ extract 51 0) ULTIMATE.start_fmod_double_~x)) .cse1)) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_fmod_double_#t~nondet19_6|)))) (and (= (_ +zero 11 53) .cse1) (= (fp ((_ extract 63 63) |c_ULTIMATE.start_fmod_double_#res|) ((_ extract 62 52) |c_ULTIMATE.start_fmod_double_#res|) ((_ extract 51 0) |c_ULTIMATE.start_fmod_double_#res|)) (fp.div roundNearestTiesToEven .cse2 .cse3)) (= .cse4 .cse3) (= .cse4 .cse2)))))) is different from false [2020-12-02 15:33:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:33:49,671 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-12-02 15:33:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 15:33:49,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-12-02 15:33:49,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:33:49,707 INFO L225 Difference]: With dead ends: 57 [2020-12-02 15:33:49,707 INFO L226 Difference]: Without dead ends: 52 [2020-12-02 15:33:49,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=32, Invalid=70, Unknown=4, NotChecked=76, Total=182 [2020-12-02 15:33:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-02 15:33:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-02 15:33:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-02 15:33:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-12-02 15:33:49,720 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-12-02 15:33:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:33:49,721 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-12-02 15:33:49,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-02 15:33:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-12-02 15:33:49,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 15:33:49,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:49,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:49,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:33:49,938 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:49,939 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-12-02 15:33:49,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:33:49,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627283737] [2020-12-02 15:33:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 15:33:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:50,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:50,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:50,462 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:33:50,463 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:33:50,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 15:33:50,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:33:50 BoogieIcfgContainer [2020-12-02 15:33:50,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:33:50,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:33:50,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:33:50,747 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:33:50,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:24" (3/4) ... [2020-12-02 15:33:50,751 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:33:50,834 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:33:50,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:33:50,837 INFO L168 Benchmark]: Toolchain (without parser) took 32555.90 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.0 MB in the beginning and 23.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:50,838 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:50,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.76 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 21.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:50,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.77 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 30.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:50,840 INFO L168 Benchmark]: Boogie Preprocessor took 60.57 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 28.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:50,841 INFO L168 Benchmark]: RCFGBuilder took 5627.75 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 28.3 MB in the beginning and 27.9 MB in the end (delta: 391.0 kB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:50,842 INFO L168 Benchmark]: TraceAbstraction took 26224.91 ms. Allocated memory is still 58.7 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:50,843 INFO L168 Benchmark]: Witness Printer took 88.41 ms. Allocated memory is still 58.7 MB. Free memory was 26.0 MB in the beginning and 23.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:50,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 472.76 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 21.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.77 ms. Allocated memory is still 48.2 MB. Free memory was 21.5 MB in the beginning and 30.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.57 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 28.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5627.75 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 28.3 MB in the beginning and 27.9 MB in the end (delta: 391.0 kB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 26224.91 ms. Allocated memory is still 58.7 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. * Witness Printer took 88.41 ms. Allocated memory is still 58.7 MB. Free memory was 26.0 MB in the beginning and 23.6 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: 177]: 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, }; [L22] -0.0 [L21] 0.0 [L22] 0.0 VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] EXPR 0.0 [L172] double y = 0.0; [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 FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L48] COND TRUE hx <= hy VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L49] COND TRUE (hx < hy) || (lx < ly) [L50] return x; VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 156 SDtfs, 2 SDslu, 400 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 8467 SizeOfPredicates, 11 NumberOfNonLiveVariables, 128 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...