./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.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_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ................................................................................................................................................................................................................................................................................................................. 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_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 15:33:53,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:33:53,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:33:53,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:33:53,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:33:53,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:33:53,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:33:53,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:33:53,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:33:53,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:33:53,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:33:53,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:33:53,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:33:53,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:33:53,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:33:53,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:33:53,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:33:53,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:33:53,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:33:53,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:33:53,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:33:53,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:33:53,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:33:53,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:33:53,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:33:53,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:33:53,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:33:53,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:33:53,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:33:53,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:33:53,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:33:53,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:33:53,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:33:53,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:33:53,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:33:53,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:33:53,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:33:53,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:33:53,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:33:53,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:33:53,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:33:53,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:33:53,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:33:53,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:33:53,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:33:53,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:33:53,857 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:33:53,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:33:53,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:33:53,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:33:53,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:33:53,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:33:53,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:33:53,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:33:53,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:33:53,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:33:53,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:33:53,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:33:53,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:33:53,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:33:53,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:33:53,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:33:53,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:33:53,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:33:53,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:33:53,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:33:53,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:33:53,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:33:53,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:33:53,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:33:53,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:33:53,864 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-12-02 15:33:54,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:33:54,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:33:54,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:33:54,317 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:33:54,320 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:33:54,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-12-02 15:33:54,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f29c9f7/4136549c737f49f3acc17027899fd932/FLAGf4e9f3bea [2020-12-02 15:33:55,126 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:33:55,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-12-02 15:33:55,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f29c9f7/4136549c737f49f3acc17027899fd932/FLAGf4e9f3bea [2020-12-02 15:33:55,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08f29c9f7/4136549c737f49f3acc17027899fd932 [2020-12-02 15:33:55,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:33:55,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:33:55,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:55,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:33:55,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:33:55,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:55,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9d9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55, skipping insertion in model container [2020-12-02 15:33:55,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:55,489 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:33:55,516 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:33:55,744 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_1130a.c[4166,4179] [2020-12-02 15:33:55,748 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:55,758 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:33:55,839 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_1130a.c[4166,4179] [2020-12-02 15:33:55,841 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:33:55,887 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:33:55,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55 WrapperNode [2020-12-02 15:33:55,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:33:55,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:55,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:33:55,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:33:55,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:55,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:33:56,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:33:56,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:33:56,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:33:56,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... [2020-12-02 15:33:56,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:33:56,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:33:56,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:33:56,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:33:56,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:33:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:33:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:33:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:33:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:33:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:33:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:33:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:33:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:33:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-02 15:33:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:33:56,924 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:33:56,925 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-02 15:33:56,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:56 BoogieIcfgContainer [2020-12-02 15:33:56,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:33:56,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:33:56,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:33:56,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:33:56,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:33:55" (1/3) ... [2020-12-02 15:33:56,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dea556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:56, skipping insertion in model container [2020-12-02 15:33:56,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:33:55" (2/3) ... [2020-12-02 15:33:56,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dea556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:33:56, skipping insertion in model container [2020-12-02 15:33:56,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:56" (3/3) ... [2020-12-02 15:33:56,937 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-12-02 15:33:56,954 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:33:56,959 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:33:56,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:33:57,004 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:33:57,004 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:33:57,004 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:33:57,004 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:33:57,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:33:57,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:33:57,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:33:57,005 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:33:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-12-02 15:33:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 15:33:57,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:57,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:57,051 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:57,062 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-12-02 15:33:57,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:33:57,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755210976] [2020-12-02 15:33:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:33:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:33:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:33:57,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755210976] [2020-12-02 15:33:57,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:33:57,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:33:57,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239983836] [2020-12-02 15:33:57,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:33:57,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:33:57,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:33:57,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:33:57,366 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-12-02 15:33:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:33:57,421 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2020-12-02 15:33:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:33:57,424 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-02 15:33:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:33:57,453 INFO L225 Difference]: With dead ends: 119 [2020-12-02 15:33:57,454 INFO L226 Difference]: Without dead ends: 57 [2020-12-02 15:33:57,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:33:57,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-02 15:33:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-02 15:33:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-02 15:33:57,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-12-02 15:33:57,522 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-12-02 15:33:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:33:57,523 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-12-02 15:33:57,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:33:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-12-02 15:33:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:33:57,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:33:57,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:33:57,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:33:57,527 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:33:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:33:57,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-12-02 15:33:57,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:33:57,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509329975] [2020-12-02 15:33:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:33:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:57,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:57,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:57,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:33:57,794 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:33:57,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:33:57,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:33:57 BoogieIcfgContainer [2020-12-02 15:33:57,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:33:57,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:33:57,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:33:57,840 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:33:57,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:33:56" (3/4) ... [2020-12-02 15:33:57,846 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:33:57,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:33:57,849 INFO L168 Benchmark]: Toolchain (without parser) took 2381.00 ms. Allocated memory was 44.0 MB in the beginning and 69.2 MB in the end (delta: 25.2 MB). Free memory was 21.0 MB in the beginning and 41.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:57,850 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:57,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.24 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.9 MB in the beginning and 38.2 MB in the end (delta: -17.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:57,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.73 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 35.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:57,853 INFO L168 Benchmark]: Boogie Preprocessor took 61.62 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 33.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:57,854 INFO L168 Benchmark]: RCFGBuilder took 837.33 ms. Allocated memory is still 54.5 MB. Free memory was 33.3 MB in the beginning and 26.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:57,856 INFO L168 Benchmark]: TraceAbstraction took 909.59 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 25.8 MB in the beginning and 41.9 MB in the end (delta: -16.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:57,856 INFO L168 Benchmark]: Witness Printer took 6.74 ms. Allocated memory is still 69.2 MB. Free memory was 41.9 MB in the beginning and 41.5 MB in the end (delta: 397.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:57,862 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 44.0 MB. Free memory is still 28.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 421.24 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.9 MB in the beginning and 38.2 MB in the end (delta: -17.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.73 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 35.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.62 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 33.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 837.33 ms. Allocated memory is still 54.5 MB. Free memory was 33.3 MB in the beginning and 26.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 909.59 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 25.8 MB in the beginning and 41.9 MB in the end (delta: -16.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.74 ms. Allocated memory is still 69.2 MB. Free memory was 41.9 MB in the beginning and 41.5 MB in the end (delta: 397.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLE_SMToperation at line 22, overapproximation of bitwiseOr at line 46, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 47, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 192, 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}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || 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}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 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=61occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 15:34:00,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:34:00,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:34:00,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:34:00,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:34:00,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:34:00,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:34:00,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:34:00,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:34:00,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:34:00,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:34:00,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:34:00,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:34:00,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:34:00,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:34:00,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:34:00,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:34:00,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:34:00,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:34:00,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:34:00,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:34:00,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:34:00,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:34:00,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:34:00,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:34:00,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:34:00,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:34:00,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:34:00,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:34:00,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:34:00,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:34:00,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:34:00,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:34:00,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:34:00,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:34:00,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:34:00,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:34:00,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:34:00,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:34:00,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:34:00,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:34:00,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:34:00,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:34:00,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:34:00,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:34:00,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:34:00,833 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:34:00,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:34:00,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:34:00,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:34:00,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:34:00,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:34:00,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:34:00,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:34:00,836 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:34:00,836 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:34:00,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:34:00,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:34:00,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:34:00,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:34:00,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:34:00,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:34:00,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:34:00,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:34:00,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:34:00,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:34:00,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:34:00,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:34:00,839 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:34:00,839 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:34:00,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:34:00,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:34:00,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:34:00,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-12-02 15:34:01,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:34:01,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:34:01,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:34:01,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:34:01,370 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:34:01,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-12-02 15:34:01,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837276c27/60dd0dcd52f74fbdbf764113f0f329f7/FLAGe4b9daf57 [2020-12-02 15:34:02,101 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:34:02,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-12-02 15:34:02,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837276c27/60dd0dcd52f74fbdbf764113f0f329f7/FLAGe4b9daf57 [2020-12-02 15:34:02,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837276c27/60dd0dcd52f74fbdbf764113f0f329f7 [2020-12-02 15:34:02,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:34:02,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:34:02,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:02,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:34:02,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:34:02,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:02,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9d9499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02, skipping insertion in model container [2020-12-02 15:34:02,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:02,508 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:34:02,534 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:34:02,754 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_1130a.c[4166,4179] [2020-12-02 15:34:02,758 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:02,777 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:34:02,870 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_1130a.c[4166,4179] [2020-12-02 15:34:02,872 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:34:02,909 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:34:02,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02 WrapperNode [2020-12-02 15:34:02,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:34:02,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:02,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:34:02,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:34:02,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:02,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:02,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:34:02,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:34:02,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:34:02,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:34:02,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:02,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:03,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:03,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:03,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:03,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:03,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (1/1) ... [2020-12-02 15:34:03,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:34:03,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:34:03,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:34:03,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:34:03,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (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 15:34:03,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:34:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:34:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:34:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:34:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:34:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-02 15:34:03,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:34:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:34:03,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:34:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:34:03,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:34:08,614 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:34:08,615 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-02 15:34:08,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:08 BoogieIcfgContainer [2020-12-02 15:34:08,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:34:08,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:34:08,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:34:08,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:34:08,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:34:02" (1/3) ... [2020-12-02 15:34:08,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557b8d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:08, skipping insertion in model container [2020-12-02 15:34:08,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:34:02" (2/3) ... [2020-12-02 15:34:08,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557b8d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:34:08, skipping insertion in model container [2020-12-02 15:34:08,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:08" (3/3) ... [2020-12-02 15:34:08,627 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-12-02 15:34:08,648 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:34:08,653 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:34:08,666 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:34:08,699 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:34:08,699 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:34:08,700 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:34:08,700 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:34:08,700 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:34:08,700 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:34:08,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:34:08,701 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:34:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-12-02 15:34:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:34:08,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:08,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:08,727 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:08,734 INFO L82 PathProgramCache]: Analyzing trace with hash 972949100, now seen corresponding path program 1 times [2020-12-02 15:34:08,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:34:08,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038699581] [2020-12-02 15:34:08,751 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 15:34:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:34:10,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:34:10,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:34:10,316 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 15:34:10,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:34:10,337 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 15:34:10,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038699581] [2020-12-02 15:34:10,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:34:10,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:34:10,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499822201] [2020-12-02 15:34:10,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:34:10,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:34:10,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:34:10,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:34:10,376 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-12-02 15:34:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:34:10,425 INFO L93 Difference]: Finished difference Result 120 states and 210 transitions. [2020-12-02 15:34:10,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:34:10,428 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-02 15:34:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:34:10,441 INFO L225 Difference]: With dead ends: 120 [2020-12-02 15:34:10,441 INFO L226 Difference]: Without dead ends: 58 [2020-12-02 15:34:10,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 15:34:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-02 15:34:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-02 15:34:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-02 15:34:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 86 transitions. [2020-12-02 15:34:10,506 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 86 transitions. Word has length 12 [2020-12-02 15:34:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:34:10,506 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 86 transitions. [2020-12-02 15:34:10,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:34:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 86 transitions. [2020-12-02 15:34:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 15:34:10,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:34:10,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:34:10,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:34:10,716 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:34:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:34:10,718 INFO L82 PathProgramCache]: Analyzing trace with hash 313712585, now seen corresponding path program 1 times [2020-12-02 15:34:10,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:34:10,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047844481] [2020-12-02 15:34:10,724 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 15:34:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:12,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:34:14,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:34:14,667 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:34:14,667 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:34:14,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:34:14,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:34:14 BoogieIcfgContainer [2020-12-02 15:34:14,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:34:14,914 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:34:14,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:34:14,915 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:34:14,915 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:34:08" (3/4) ... [2020-12-02 15:34:14,918 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:34:14,982 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:34:14,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:34:14,986 INFO L168 Benchmark]: Toolchain (without parser) took 12511.15 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.3 MB in the beginning and 24.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:14,987 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 33.6 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 22.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:34:14,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.42 ms. Allocated memory is still 41.9 MB. Free memory was 19.0 MB in the beginning and 22.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:14,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.98 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 20.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:14,990 INFO L168 Benchmark]: Boogie Preprocessor took 64.53 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 20.2 MB in the beginning and 33.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:14,990 INFO L168 Benchmark]: RCFGBuilder took 5565.62 ms. Allocated memory is still 50.3 MB. Free memory was 33.9 MB in the beginning and 22.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:14,991 INFO L168 Benchmark]: TraceAbstraction took 6294.28 ms. Allocated memory is still 50.3 MB. Free memory was 22.4 MB in the beginning and 27.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:14,992 INFO L168 Benchmark]: Witness Printer took 68.80 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 24.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:34:14,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 33.6 MB. Free memory was 20.2 MB in the beginning and 20.2 MB in the end (delta: 22.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 432.42 ms. Allocated memory is still 41.9 MB. Free memory was 19.0 MB in the beginning and 22.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.98 ms. Allocated memory is still 41.9 MB. Free memory was 22.8 MB in the beginning and 20.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.53 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 20.2 MB in the beginning and 33.9 MB in the end (delta: -13.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5565.62 ms. Allocated memory is still 50.3 MB. Free memory was 33.9 MB in the beginning and 22.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6294.28 ms. Allocated memory is still 50.3 MB. Free memory was 22.4 MB in the beginning and 27.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 68.80 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 24.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 193]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] EXPR 1.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L20] EXPR 1.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L21] EXPR 0.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L22] EXPR 0.0 [L22] EXPR -0.0 [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L22] -0.0 [L21] 0.0 [L22] 0.0 VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L184] EXPR 0.0 [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] EXPR 0.0 [L187] y < 0.0 || y > 0.0 VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] EXPR x * y [L47] EXPR x * y [L47] EXPR (x * y) / (x * y) [L47] return (x * y) / (x * y); [L189] double res = fmod_double(x, y); [L192] EXPR 0.0 [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=4607182418800017408, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 3.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 59 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...