./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_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 ../sv-benchmarks/c/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-a4ecdab [2020-10-24 23:16:42,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:42,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:42,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:42,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:42,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:42,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:42,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:42,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:42,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:42,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:42,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:42,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:42,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:42,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:42,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:42,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:42,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:42,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:42,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:42,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:42,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:42,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:42,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:42,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:42,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:42,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:42,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:42,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:42,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:42,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:42,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:42,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:42,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:42,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:42,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:42,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:42,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:42,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:42,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:42,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:42,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:16:42,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:42,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:42,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:42,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:42,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:42,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:42,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:42,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:16:42,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:42,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:42,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:42,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:42,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:42,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:42,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:42,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:42,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:42,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:42,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:42,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:42,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:42,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:42,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:42,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:42,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:42,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:16:42,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:16:42,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:42,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:42,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-10-24 23:16:43,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:43,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:43,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:43,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:43,383 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:43,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-24 23:16:43,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe439f84/fedf1fcce9ef4130b5d9c82d1c619d94/FLAGccdc748b7 [2020-10-24 23:16:44,230 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:44,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-24 23:16:44,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe439f84/fedf1fcce9ef4130b5d9c82d1c619d94/FLAGccdc748b7 [2020-10-24 23:16:44,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe439f84/fedf1fcce9ef4130b5d9c82d1c619d94 [2020-10-24 23:16:44,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:44,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:44,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:44,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:44,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:44,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:44,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e09b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44, skipping insertion in model container [2020-10-24 23:16:44,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:44,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:44,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:44,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:44,912 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:44,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:44,992 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:44,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44 WrapperNode [2020-10-24 23:16:44,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:44,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:44,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:44,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:45,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:45,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:45,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:45,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:45,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (1/1) ... [2020-10-24 23:16:45,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:45,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:45,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:45,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:45,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (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 [2020-10-24 23:16:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:16:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:45,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:16:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:16:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:16:45,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:45,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:16:45,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-24 23:16:45,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:46,036 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:46,037 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-24 23:16:46,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:46 BoogieIcfgContainer [2020-10-24 23:16:46,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:46,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:46,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:46,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:46,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:44" (1/3) ... [2020-10-24 23:16:46,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577a7419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:46, skipping insertion in model container [2020-10-24 23:16:46,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:44" (2/3) ... [2020-10-24 23:16:46,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577a7419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:46, skipping insertion in model container [2020-10-24 23:16:46,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:46" (3/3) ... [2020-10-24 23:16:46,051 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-10-24 23:16:46,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:46,071 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:46,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:46,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:46,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:46,114 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:46,115 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:46,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:46,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:46,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:46,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-24 23:16:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:16:46,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:46,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:46,140 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:46,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:46,148 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-24 23:16:46,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:46,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354779859] [2020-10-24 23:16:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:46,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354779859] [2020-10-24 23:16:46,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:46,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:16:46,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255234859] [2020-10-24 23:16:46,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:46,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:16:46,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:46,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:46,343 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-24 23:16:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:46,379 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-24 23:16:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:46,380 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:16:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:46,392 INFO L225 Difference]: With dead ends: 109 [2020-10-24 23:16:46,393 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 23:16:46,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 23:16:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-24 23:16:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-24 23:16:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-24 23:16:46,442 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-24 23:16:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:46,442 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-24 23:16:46,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-24 23:16:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:16:46,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:46,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:46,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:16:46,445 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:46,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-24 23:16:46,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:46,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535784083] [2020-10-24 23:16:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:46,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:46,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:46,705 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:16:46,705 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:46,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:16:46,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:46 BoogieIcfgContainer [2020-10-24 23:16:46,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:46,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:46,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:46,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:46,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:46" (3/4) ... [2020-10-24 23:16:46,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:16:46,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:46,753 INFO L168 Benchmark]: Toolchain (without parser) took 2196.85 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 26.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:46,754 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 37.7 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:46,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.03 ms. Allocated memory is still 46.1 MB. Free memory was 29.5 MB in the beginning and 28.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:46,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.24 ms. Allocated memory is still 46.1 MB. Free memory was 28.1 MB in the beginning and 25.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:46,757 INFO L168 Benchmark]: Boogie Preprocessor took 74.28 ms. Allocated memory is still 46.1 MB. Free memory was 25.7 MB in the beginning and 23.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:46,758 INFO L168 Benchmark]: RCFGBuilder took 899.68 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 23.4 MB in the beginning and 37.9 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:46,759 INFO L168 Benchmark]: TraceAbstraction took 701.99 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 26.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:46,760 INFO L168 Benchmark]: Witness Printer took 6.04 ms. Allocated memory is still 58.7 MB. Free memory was 26.6 MB in the beginning and 26.2 MB in the end (delta: 364.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:46,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 37.7 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 433.03 ms. Allocated memory is still 46.1 MB. Free memory was 29.5 MB in the beginning and 28.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.24 ms. Allocated memory is still 46.1 MB. Free memory was 28.1 MB in the beginning and 25.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.28 ms. Allocated memory is still 46.1 MB. Free memory was 25.7 MB in the beginning and 23.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 899.68 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 23.4 MB in the beginning and 37.9 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 701.99 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 26.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 6.04 ms. Allocated memory is still 58.7 MB. Free memory was 26.6 MB in the beginning and 26.2 MB in the end (delta: 364.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation 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) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, 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=56occurred 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-a4ecdab [2020-10-24 23:16:49,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:49,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:49,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:49,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:49,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:49,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:49,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:49,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:49,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:49,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:49,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:49,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:49,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:49,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:49,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:49,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:49,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:49,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:49,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:49,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:49,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:49,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:49,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:49,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:49,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:49,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:49,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:49,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:49,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:49,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:49,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:49,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:49,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:49,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:49,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:49,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:49,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:49,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:49,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:49,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:49,661 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:16:49,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:49,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:49,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:49,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:49,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:49,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:49,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:49,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:49,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:49,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:49,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:49,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:49,726 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:16:49,727 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:16:49,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:49,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:49,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:49,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:49,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:49,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:49,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:49,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:49,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:49,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:49,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:49,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:49,730 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:16:49,731 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:16:49,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:49,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:49,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:16:49,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-10-24 23:16:50,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:50,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:50,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:50,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:50,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:50,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-24 23:16:50,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd1fdca2/38fe037a6eb442b4be3bb63508ab58e9/FLAG0b6306a24 [2020-10-24 23:16:50,921 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:50,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-10-24 23:16:50,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd1fdca2/38fe037a6eb442b4be3bb63508ab58e9/FLAG0b6306a24 [2020-10-24 23:16:51,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd1fdca2/38fe037a6eb442b4be3bb63508ab58e9 [2020-10-24 23:16:51,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:51,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:51,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:51,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:51,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:51,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1693068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51, skipping insertion in model container [2020-10-24 23:16:51,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:51,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:51,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:51,693 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:51,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:51,789 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:51,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51 WrapperNode [2020-10-24 23:16:51,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:51,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:51,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:51,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:51,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:51,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:51,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:51,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:51,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:51,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:51,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:51,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:51,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (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 [2020-10-24 23:16:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:16:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:16:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:16:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-24 23:16:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:16:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:52,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:16:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:55,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:55,871 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-24 23:16:55,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:55 BoogieIcfgContainer [2020-10-24 23:16:55,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:55,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:55,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:55,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:55,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:51" (1/3) ... [2020-10-24 23:16:55,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5938be47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:55, skipping insertion in model container [2020-10-24 23:16:55,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (2/3) ... [2020-10-24 23:16:55,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5938be47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:55, skipping insertion in model container [2020-10-24 23:16:55,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:55" (3/3) ... [2020-10-24 23:16:55,881 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-10-24 23:16:55,893 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:55,899 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:55,913 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:55,939 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:55,940 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:55,940 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:55,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:55,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:55,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:55,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:55,941 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-24 23:16:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 23:16:55,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:55,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:55,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-10-24 23:16:55,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:55,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641124421] [2020-10-24 23:16:55,993 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 [2020-10-24 23:16:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:57,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:16:57,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:57,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:57,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641124421] [2020-10-24 23:16:57,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:57,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:16:57,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725683166] [2020-10-24 23:16:57,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:57,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:57,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:57,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:57,182 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-24 23:16:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:57,222 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-10-24 23:16:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:57,223 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 23:16:57,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:57,236 INFO L225 Difference]: With dead ends: 109 [2020-10-24 23:16:57,236 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 23:16:57,241 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 [2020-10-24 23:16:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 23:16:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-24 23:16:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-24 23:16:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-10-24 23:16:57,303 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-10-24 23:16:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:57,303 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-10-24 23:16:57,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-10-24 23:16:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:16:57,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:57,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:57,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:16:57,520 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-10-24 23:16:57,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:57,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753893791] [2020-10-24 23:16:57,524 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 [2020-10-24 23:16:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:58,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-24 23:16:58,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:10,100 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification that was a NOOP. DAG size: 8 [2020-10-24 23:17:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:19,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:33,433 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-10-24 23:17:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:35,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753893791] [2020-10-24 23:17:35,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:35,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-24 23:17:35,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443834138] [2020-10-24 23:17:35,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 23:17:35,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 23:17:35,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=5, NotChecked=16, Total=110 [2020-10-24 23:17:35,424 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-10-24 23:17:41,271 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (_ +zero 11 53))) is different from true [2020-10-24 23:17:59,743 WARN L193 SmtUtils]: Spent 6.76 s on a formula simplification that was a NOOP. DAG size: 12 [2020-10-24 23:18:03,846 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv1 32) |c_ULTIMATE.start_main_#t~ret25|) (= (_ bv1 32) |c_ULTIMATE.start_isnan_double_#res|) (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (_ +zero 11 53)))) (fp.div roundNearestTiesToEven .cse0 .cse0))))) is different from false [2020-10-24 23:18:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:18:15,237 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-10-24 23:18:15,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 23:18:15,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-10-24 23:18:15,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:18:15,283 INFO L225 Difference]: With dead ends: 57 [2020-10-24 23:18:15,283 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 23:18:15,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 57.9s TimeCoverageRelationStatistics Valid=33, Invalid=82, Unknown=7, NotChecked=60, Total=182 [2020-10-24 23:18:15,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 23:18:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-24 23:18:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-24 23:18:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-10-24 23:18:15,292 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-10-24 23:18:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:18:15,292 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-10-24 23:18:15,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 23:18:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-10-24 23:18:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:18:15,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:18:15,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:18:15,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:18:15,498 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:18:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:18:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-10-24 23:18:15,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:18:15,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708793523] [2020-10-24 23:18:15,501 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 [2020-10-24 23:18:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:18:15,801 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:18:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:18:16,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:18:16,143 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:18:16,143 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:18:16,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:18:16,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:18:16 BoogieIcfgContainer [2020-10-24 23:18:16,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:18:16,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:18:16,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:18:16,403 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:18:16,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:55" (3/4) ... [2020-10-24 23:18:16,406 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:18:16,504 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:18:16,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:18:16,506 INFO L168 Benchmark]: Toolchain (without parser) took 85234.74 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.7 MB in the beginning and 38.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:18:16,507 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 52.4 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:18:16,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 512.42 ms. Allocated memory is still 52.4 MB. Free memory was 28.1 MB in the beginning and 27.1 MB in the end (delta: 973.1 kB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:18:16,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.52 ms. Allocated memory is still 52.4 MB. Free memory was 27.1 MB in the beginning and 24.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:18:16,510 INFO L168 Benchmark]: Boogie Preprocessor took 99.12 ms. Allocated memory is still 52.4 MB. Free memory was 24.9 MB in the beginning and 22.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:18:16,511 INFO L168 Benchmark]: RCFGBuilder took 3901.43 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 22.6 MB in the beginning and 36.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:18:16,511 INFO L168 Benchmark]: TraceAbstraction took 80527.16 ms. Allocated memory is still 67.1 MB. Free memory was 35.7 MB in the beginning and 41.3 MB in the end (delta: -5.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:18:16,512 INFO L168 Benchmark]: Witness Printer took 102.38 ms. Allocated memory is still 67.1 MB. Free memory was 40.9 MB in the beginning and 38.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:18:16,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 52.4 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 512.42 ms. Allocated memory is still 52.4 MB. Free memory was 28.1 MB in the beginning and 27.1 MB in the end (delta: 973.1 kB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.52 ms. Allocated memory is still 52.4 MB. Free memory was 27.1 MB in the beginning and 24.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.12 ms. Allocated memory is still 52.4 MB. Free memory was 24.9 MB in the beginning and 22.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3901.43 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 22.6 MB in the beginning and 36.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 80527.16 ms. Allocated memory is still 67.1 MB. Free memory was 35.7 MB in the beginning and 41.3 MB in the end (delta: -5.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 102.38 ms. Allocated memory is still 67.1 MB. Free memory was 40.9 MB in the beginning and 38.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [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=1.0, 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=1.0, Zero_fmod={2:0}] [L45-L46] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L48] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L49] COND TRUE (hx < hy) || (lx < ly) [L50] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 80.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 39.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 4 SDslu, 399 SDs, 0 SdLazy, 25 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 16.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 57.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 2.3s SatisfiabilityAnalysisTime, 36.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2549 SizeOfPredicates, 11 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 12 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...