./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.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_1131b.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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ........................................................................................................................................................................................................................................................................................................................ 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_1131b.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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ............................................................................................................................................................................................................................................................................................................................................................... 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 15:34:07,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:34:07,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:34:07,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:34:07,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:34:07,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:34:07,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:34:07,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:34:07,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:34:07,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:34:07,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:34:07,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:34:07,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:34:07,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:34:07,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:34:07,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:34:07,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:34:07,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:34:07,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:34:07,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:34:07,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:34:07,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:34:07,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:34:07,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:34:07,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:34:07,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:34:07,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:34:07,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:34:07,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:34:07,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:34:07,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:34:07,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:34:07,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:34:07,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:34:07,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:34:07,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:34:07,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:34:07,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:34:07,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:34:07,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:34:07,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:34:07,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:34:07,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:34:07,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:34:07,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:34:07,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:34:07,777 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:34:07,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:34:07,778 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:34:07,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:34:07,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:34:07,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:34:07,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:34:07,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:34:07,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:34:07,779 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:34:07,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:34:07,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:34:07,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:34:07,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:34:07,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:34:07,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:34:07,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:34:07,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:34:07,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:34:07,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:34:07,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:34:07,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:34:07,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:34:07,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:34:07,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:34:07,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-12-02 15:34:08,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:34:08,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:34:08,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:34:08,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:34:08,224 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:34:08,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-12-02 15:34:08,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d26c80c4b/67da71a333df4684b96ea3713e390ff1/FLAGdfd0878d0 [2020-12-02 15:34:09,075 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:34:09,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-12-02 15:34:09,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d26c80c4b/67da71a333df4684b96ea3713e390ff1/FLAGdfd0878d0 [2020-12-02 15:34:09,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d26c80c4b/67da71a333df4684b96ea3713e390ff1 [2020-12-02 15:34:09,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:34:09,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:34:09,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:09,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:34:09,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:34:09,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50af617d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09, skipping insertion in model container [2020-12-02 15:34:09,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,470 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:34:09,523 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:34:09,770 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_1131b.c[4119,4132] [2020-12-02 15:34:09,777 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:09,792 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:34:09,848 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_1131b.c[4119,4132] [2020-12-02 15:34:09,849 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:09,884 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:34:09,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09 WrapperNode [2020-12-02 15:34:09,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:09,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:09,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:34:09,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:34:09,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:09,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:34:09,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:34:09,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:34:09,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:09,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:10,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:10,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... [2020-12-02 15:34:10,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:34:10,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:34:10,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:34:10,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:34:10,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:34:10,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:34:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:34:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:34:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:34:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:34:10,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:34:10,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:34:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:34:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-02 15:34:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:34:10,932 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:34:10,932 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-02 15:34:10,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:10 BoogieIcfgContainer [2020-12-02 15:34:10,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:34:10,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:34:10,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:34:10,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:34:10,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:34:09" (1/3) ... [2020-12-02 15:34:10,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea8abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:10, skipping insertion in model container [2020-12-02 15:34:10,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:09" (2/3) ... [2020-12-02 15:34:10,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea8abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:10, skipping insertion in model container [2020-12-02 15:34:10,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:10" (3/3) ... [2020-12-02 15:34:10,945 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-12-02 15:34:10,963 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:34:10,967 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:34:10,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:34:11,007 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:34:11,008 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:34:11,008 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:34:11,008 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:34:11,008 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:34:11,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:34:11,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:34:11,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:34:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-02 15:34:11,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:34:11,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:11,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:11,033 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:11,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-02 15:34:11,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:34:11,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400000626] [2020-12-02 15:34:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:34:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:34:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:34:11,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400000626] [2020-12-02 15:34:11,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:34:11,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:34:11,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866631510] [2020-12-02 15:34:11,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:34:11,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:34:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:34:11,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:34:11,222 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-02 15:34:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:34:11,248 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-02 15:34:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:34:11,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:34:11,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:34:11,261 INFO L225 Difference]: With dead ends: 118 [2020-12-02 15:34:11,261 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 15:34:11,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:34:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 15:34:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-02 15:34:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-02 15:34:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-02 15:34:11,306 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-02 15:34:11,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:34:11,316 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-02 15:34:11,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:34:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-02 15:34:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 15:34:11,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:11,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:11,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:34:11,318 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:11,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:11,319 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-02 15:34:11,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:34:11,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732373812] [2020-12-02 15:34:11,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:34:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:11,433 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:11,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:11,615 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:34:11,615 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:34:11,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:34:11,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:34:11 BoogieIcfgContainer [2020-12-02 15:34:11,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:34:11,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:34:11,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:34:11,654 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:34:11,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:10" (3/4) ... [2020-12-02 15:34:11,658 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:34:11,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:34:11,661 INFO L168 Benchmark]: Toolchain (without parser) took 2279.63 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 17.2 MB in the beginning and 27.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:11,662 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 27.2 MB in the beginning and 27.2 MB in the end (delta: 22.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:11,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.05 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 32.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:11,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.94 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 30.1 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:11,664 INFO L168 Benchmark]: Boogie Preprocessor took 74.45 ms. Allocated memory is still 50.3 MB. Free memory was 30.1 MB in the beginning and 27.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:11,665 INFO L168 Benchmark]: RCFGBuilder took 900.87 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.8 MB in the beginning and 40.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:11,666 INFO L168 Benchmark]: TraceAbstraction took 716.33 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 27.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:11,667 INFO L168 Benchmark]: Witness Printer took 4.56 ms. Allocated memory is still 60.8 MB. Free memory is still 27.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:11,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 27.2 MB in the beginning and 27.2 MB in the end (delta: 22.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.05 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 32.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.94 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 30.1 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.45 ms. Allocated memory is still 50.3 MB. Free memory was 30.1 MB in the beginning and 27.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 900.87 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.8 MB in the beginning and 40.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 716.33 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 27.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.56 ms. Allocated memory is still 60.8 MB. Free memory is still 27.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: 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 19, overapproximation of bitwiseOr at line 43, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 44, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L188] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 15:34:14,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:34:14,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:34:14,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:34:14,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:34:14,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:34:14,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:34:14,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:34:14,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:34:14,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:34:14,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:34:14,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:34:14,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:34:14,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:34:14,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:34:14,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:34:14,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:34:14,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:34:14,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:34:14,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:34:14,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:34:14,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:34:14,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:34:14,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:34:14,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:34:14,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:34:14,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:34:14,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:34:14,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:34:14,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:34:14,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:34:14,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:34:14,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:34:14,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:34:14,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:34:14,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:34:14,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:34:14,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:34:14,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:34:14,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:34:14,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:34:14,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:34:14,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:34:14,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:34:14,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:34:14,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:34:14,375 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:34:14,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:34:14,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:34:14,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:34:14,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:34:14,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:34:14,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:34:14,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:34:14,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:34:14,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:34:14,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:34:14,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:34:14,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:34:14,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:34:14,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:34:14,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:34:14,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:34:14,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:34:14,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:34:14,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:34:14,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:34:14,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:34:14,382 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:34:14,382 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:34:14,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:34:14,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:34:14,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:34:14,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-12-02 15:34:14,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:34:14,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:34:14,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:34:14,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:34:14,822 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:34:14,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-12-02 15:34:14,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3bae7a7/98cf05ec4d2645d3aec4fa286d8b1e08/FLAGf961f3944 [2020-12-02 15:34:15,513 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:34:15,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-12-02 15:34:15,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3bae7a7/98cf05ec4d2645d3aec4fa286d8b1e08/FLAGf961f3944 [2020-12-02 15:34:15,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3bae7a7/98cf05ec4d2645d3aec4fa286d8b1e08 [2020-12-02 15:34:15,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:34:15,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:34:15,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:15,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:34:15,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:34:15,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:15" (1/1) ... [2020-12-02 15:34:15,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c17c0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:15, skipping insertion in model container [2020-12-02 15:34:15,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:15" (1/1) ... [2020-12-02 15:34:15,888 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:34:15,916 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:34:16,141 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_1131b.c[4119,4132] [2020-12-02 15:34:16,144 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:16,160 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:34:16,242 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_1131b.c[4119,4132] [2020-12-02 15:34:16,243 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:16,268 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:34:16,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16 WrapperNode [2020-12-02 15:34:16,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:16,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:16,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:34:16,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:34:16,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:16,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:34:16,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:34:16,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:34:16,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... [2020-12-02 15:34:16,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:34:16,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:34:16,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:34:16,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:34:16,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:34:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:34:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:34:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:34:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:34:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:34:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-02 15:34:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:34:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:34:16,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:34:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:34:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:34:21,893 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:34:21,893 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-02 15:34:21,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:21 BoogieIcfgContainer [2020-12-02 15:34:21,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:34:21,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:34:21,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:34:21,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:34:21,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:34:15" (1/3) ... [2020-12-02 15:34:21,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b7a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:21, skipping insertion in model container [2020-12-02 15:34:21,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:16" (2/3) ... [2020-12-02 15:34:21,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5b7a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:21, skipping insertion in model container [2020-12-02 15:34:21,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:21" (3/3) ... [2020-12-02 15:34:21,910 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-12-02 15:34:21,933 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:34:21,937 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:34:21,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:34:21,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:34:21,972 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:34:21,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:34:21,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:34:21,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:34:21,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:34:21,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:34:21,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:34:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-02 15:34:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:34:21,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:21,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:21,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:22,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-02 15:34:22,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:34:22,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436253865] [2020-12-02 15:34:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 15:34:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:34:23,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:34:23,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:34:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:34:23,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:34:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:34:23,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436253865] [2020-12-02 15:34:23,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:34:23,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:34:23,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895810590] [2020-12-02 15:34:23,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:34:23,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:34:23,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:34:23,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:34:23,897 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-02 15:34:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:34:23,932 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-02 15:34:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:34:23,933 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:34:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:34:23,943 INFO L225 Difference]: With dead ends: 118 [2020-12-02 15:34:23,943 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 15:34:23,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:34:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 15:34:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-02 15:34:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-02 15:34:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-02 15:34:23,982 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-02 15:34:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:34:23,982 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-02 15:34:23,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:34:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-02 15:34:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 15:34:23,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:23,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:24,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:34:24,198 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:24,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:24,200 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-02 15:34:24,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:34:24,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573539821] [2020-12-02 15:34:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 15:34:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:26,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:29,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:29,261 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:34:29,261 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:34:29,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:34:29,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:34:29 BoogieIcfgContainer [2020-12-02 15:34:29,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:34:29,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:34:29,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:34:29,511 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:34:29,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:21" (3/4) ... [2020-12-02 15:34:29,515 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:34:29,590 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:34:29,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:34:29,593 INFO L168 Benchmark]: Toolchain (without parser) took 13729.92 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.8 MB in the beginning and 34.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:29,594 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:29,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.05 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 30.9 MB in the end (delta: -449.3 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:29,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.58 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 28.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:29,596 INFO L168 Benchmark]: Boogie Preprocessor took 99.58 ms. Allocated memory is still 54.5 MB. Free memory was 28.6 MB in the beginning and 26.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:29,597 INFO L168 Benchmark]: RCFGBuilder took 5446.88 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.1 MB in the beginning and 47.3 MB in the end (delta: -21.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:29,598 INFO L168 Benchmark]: TraceAbstraction took 7613.03 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 37.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:29,598 INFO L168 Benchmark]: Witness Printer took 79.63 ms. Allocated memory is still 67.1 MB. Free memory was 37.4 MB in the beginning and 34.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:29,603 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 54.5 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.05 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 30.9 MB in the end (delta: -449.3 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.58 ms. Allocated memory is still 54.5 MB. Free memory was 30.9 MB in the beginning and 28.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.58 ms. Allocated memory is still 54.5 MB. Free memory was 28.6 MB in the beginning and 26.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5446.88 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.1 MB in the beginning and 47.3 MB in the end (delta: -21.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7613.03 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 37.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 79.63 ms. Allocated memory is still 67.1 MB. Free memory was 37.4 MB in the beginning and 34.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 188]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] EXPR 1.0 [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L17] EXPR 1.0 [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L18] EXPR 0.0 [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L19] EXPR 0.0 [L19] EXPR -0.0 [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L19] EXPR 0.0 [L19] -0.0 [L18] 0.0 VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L179] EXPR 1.0 [L179] EXPR -1.0 [L179] EXPR 0.0 [L179] EXPR -1.0 / 0.0 [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] EXPR x * y [L44] EXPR x * y [L44] EXPR (x * y) / (x * y) [L44] return (x * y) / (x * y); [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L188] reach_error() VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...