./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ef2080ffd97f82ac51854e7d9813eba864fd0a ................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ef2080ffd97f82ac51854e7d9813eba864fd0a .................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-096883e [2020-12-01 23:20:36,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:36,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:36,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:36,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:36,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:36,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:36,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:36,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:36,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:36,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:36,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:36,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:36,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:36,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:36,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:36,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:36,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:36,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:36,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:36,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:36,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:36,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:36,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:36,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:36,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:36,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:36,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:36,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:36,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:36,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:36,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:36,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:36,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:36,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:36,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:36,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:36,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:36,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:36,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:36,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:36,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:20:36,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:36,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:36,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:36,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:36,921 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:36,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:36,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:36,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:20:36,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:36,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:36,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:36,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:36,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:36,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:36,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:36,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:36,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:36,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:36,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:36,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:36,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:36,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:36,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:36,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:36,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:36,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:20:36,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:20:36,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:36,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:36,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-12-01 23:20:37,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:37,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:37,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:37,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:37,339 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:37,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-12-01 23:20:37,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a99517d/9c15f1b55f5645369c81d29aee5aea28/FLAG8da8c57e6 [2020-12-01 23:20:38,068 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:38,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-12-01 23:20:38,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a99517d/9c15f1b55f5645369c81d29aee5aea28/FLAG8da8c57e6 [2020-12-01 23:20:38,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73a99517d/9c15f1b55f5645369c81d29aee5aea28 [2020-12-01 23:20:38,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:38,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:38,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:38,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:38,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:38,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:38,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a889c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38, skipping insertion in model container [2020-12-01 23:20:38,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:38,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:38,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:38,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2020-12-01 23:20:38,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:38,736 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:38,840 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2020-12-01 23:20:38,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:38,866 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:38,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38 WrapperNode [2020-12-01 23:20:38,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:38,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:38,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:38,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:38,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:38,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:38,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:38,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:38,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:38,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:38,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:38,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:38,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:38,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:39,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:39,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:39,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (1/1) ... [2020-12-01 23:20:39,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:39,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:39,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:39,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:39,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (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 [2020-12-01 23:20:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:20:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:20:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:20:39,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:20:39,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:39,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:39,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:20:39,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-01 23:20:39,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:39,803 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:39,803 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-01 23:20:39,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:39 BoogieIcfgContainer [2020-12-01 23:20:39,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:39,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:39,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:39,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:39,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:38" (1/3) ... [2020-12-01 23:20:39,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4359c90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:39, skipping insertion in model container [2020-12-01 23:20:39,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:38" (2/3) ... [2020-12-01 23:20:39,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4359c90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:39, skipping insertion in model container [2020-12-01 23:20:39,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:39" (3/3) ... [2020-12-01 23:20:39,814 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-12-01 23:20:39,830 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:39,834 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:39,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:39,894 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:39,894 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:39,894 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:39,894 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:39,895 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:39,895 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:39,895 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:39,895 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-01 23:20:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:20:39,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:39,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:39,937 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:39,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-01 23:20:39,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:39,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808602706] [2020-12-01 23:20:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:40,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808602706] [2020-12-01 23:20:40,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:40,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:20:40,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759336798] [2020-12-01 23:20:40,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:40,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:20:40,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:40,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:40,144 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-01 23:20:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:40,182 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-01 23:20:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:40,183 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 23:20:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:40,195 INFO L225 Difference]: With dead ends: 108 [2020-12-01 23:20:40,195 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 23:20:40,201 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 [2020-12-01 23:20:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 23:20:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-01 23:20:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-01 23:20:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-01 23:20:40,240 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-01 23:20:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:40,240 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-01 23:20:40,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-01 23:20:40,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:20:40,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:40,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:40,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:20:40,242 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:40,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:40,243 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-01 23:20:40,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:40,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201515286] [2020-12-01 23:20:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:40,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:40,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:40,438 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:20:40,439 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:40,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:20:40,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:40 BoogieIcfgContainer [2020-12-01 23:20:40,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:40,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:40,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:40,477 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:40,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:39" (3/4) ... [2020-12-01 23:20:40,481 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:20:40,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:40,484 INFO L168 Benchmark]: Toolchain (without parser) took 2107.85 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.9 MB in the beginning and 21.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:40,485 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:40,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.19 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 22.7 MB in the end (delta: 61.3 kB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:40,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.85 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 20.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:40,488 INFO L168 Benchmark]: Boogie Preprocessor took 99.01 ms. Allocated memory is still 46.1 MB. Free memory was 20.2 MB in the beginning and 29.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:40,489 INFO L168 Benchmark]: RCFGBuilder took 738.77 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 33.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:40,490 INFO L168 Benchmark]: TraceAbstraction took 668.84 ms. Allocated memory is still 56.6 MB. Free memory was 32.7 MB in the beginning and 21.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:40,491 INFO L168 Benchmark]: Witness Printer took 5.38 ms. Allocated memory is still 56.6 MB. Free memory is still 21.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:40,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 46.1 MB. Free memory was 28.5 MB in the beginning and 28.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 490.19 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 22.7 MB in the end (delta: 61.3 kB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.85 ms. Allocated memory is still 46.1 MB. Free memory was 22.7 MB in the beginning and 20.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.01 ms. Allocated memory is still 46.1 MB. Free memory was 20.2 MB in the beginning and 29.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 738.77 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 33.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 668.84 ms. Allocated memory is still 56.6 MB. Free memory was 32.7 MB in the beginning and 21.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.38 ms. Allocated memory is still 56.6 MB. Free memory is still 21.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 177]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:20:43,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:43,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:43,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:43,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:43,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:43,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:43,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:43,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:43,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:43,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:43,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:43,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:43,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:43,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:43,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:43,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:43,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:43,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:43,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:43,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:43,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:43,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:43,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:43,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:43,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:43,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:43,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:43,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:43,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:43,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:43,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:43,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:43,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:43,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:43,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:43,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:43,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:43,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:43,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:43,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:43,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:20:43,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:43,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:43,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:43,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:43,183 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:43,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:43,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:43,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:43,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:43,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:43,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:43,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:43,186 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:20:43,186 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:20:43,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:43,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:43,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:43,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:43,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:43,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:43,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:43,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:43,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:43,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:43,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:43,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:43,189 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:20:43,189 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:20:43,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:43,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:43,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:20:43,190 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-12-01 23:20:43,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:43,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:43,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:43,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:43,653 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:43,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-12-01 23:20:43,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194c21933/a97616f9508248ceb602f0b1d39d688a/FLAG8c5910997 [2020-12-01 23:20:44,449 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:44,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-12-01 23:20:44,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194c21933/a97616f9508248ceb602f0b1d39d688a/FLAG8c5910997 [2020-12-01 23:20:44,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/194c21933/a97616f9508248ceb602f0b1d39d688a [2020-12-01 23:20:44,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:44,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:44,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:44,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:44,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:44,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734b4ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44, skipping insertion in model container [2020-12-01 23:20:44,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:44,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:45,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2020-12-01 23:20:45,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:45,213 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:45,291 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2020-12-01 23:20:45,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:45,334 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:45,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45 WrapperNode [2020-12-01 23:20:45,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:45,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:45,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:45,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:45,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:45,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:45,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:45,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:45,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (1/1) ... [2020-12-01 23:20:45,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:45,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:45,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:45,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:45,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (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 [2020-12-01 23:20:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:20:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:20:45,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:20:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-01 23:20:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:20:45,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:45,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:20:45,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:51,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:51,113 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-01 23:20:51,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:51 BoogieIcfgContainer [2020-12-01 23:20:51,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:51,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:51,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:51,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:51,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:44" (1/3) ... [2020-12-01 23:20:51,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446773dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:51, skipping insertion in model container [2020-12-01 23:20:51,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:45" (2/3) ... [2020-12-01 23:20:51,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446773dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:51, skipping insertion in model container [2020-12-01 23:20:51,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:51" (3/3) ... [2020-12-01 23:20:51,134 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-12-01 23:20:51,162 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:51,167 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:51,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:51,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:51,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:51,227 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:51,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:51,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:51,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:51,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:51,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-12-01 23:20:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:20:51,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:51,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:51,255 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:51,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:51,262 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-12-01 23:20:51,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:51,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711066366] [2020-12-01 23:20:51,279 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 [2020-12-01 23:20:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:52,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:20:52,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:52,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:52,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711066366] [2020-12-01 23:20:52,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:52,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:20:52,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8342091] [2020-12-01 23:20:52,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:52,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:52,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:52,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:52,396 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-12-01 23:20:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:52,422 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2020-12-01 23:20:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:52,424 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 23:20:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:52,435 INFO L225 Difference]: With dead ends: 108 [2020-12-01 23:20:52,436 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 23:20:52,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 23:20:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-01 23:20:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-01 23:20:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-12-01 23:20:52,483 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-12-01 23:20:52,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:52,483 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-12-01 23:20:52,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:52,484 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-12-01 23:20:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:20:52,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:52,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:52,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:20:52,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:52,701 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-12-01 23:20:52,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:52,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358815924] [2020-12-01 23:20:52,703 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 [2020-12-01 23:20:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:53,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 23:20:53,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:03,858 WARN L197 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 8 [2020-12-01 23:21:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:12,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:21:23,223 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-12-01 23:21:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:24,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358815924] [2020-12-01 23:21:24,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:24,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-01 23:21:24,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020053289] [2020-12-01 23:21:24,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 23:21:24,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:21:24,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 23:21:24,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=5, NotChecked=16, Total=110 [2020-12-01 23:21:24,973 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-12-01 23:21:28,725 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (_ +zero 11 53))) is different from true [2020-12-01 23:21:53,163 WARN L197 SmtUtils]: Spent 15.42 s on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-12-01 23:21:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:58,198 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-12-01 23:21:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 23:21:58,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-12-01 23:21:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:58,225 INFO L225 Difference]: With dead ends: 57 [2020-12-01 23:21:58,225 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 23:21:58,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 56.7s TimeCoverageRelationStatistics Valid=32, Invalid=80, Unknown=6, NotChecked=38, Total=156 [2020-12-01 23:21:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 23:21:58,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-01 23:21:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-01 23:21:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-12-01 23:21:58,234 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-12-01 23:21:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:58,235 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-12-01 23:21:58,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 23:21:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-12-01 23:21:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:21:58,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:58,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:58,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:21:58,438 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:58,440 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-12-01 23:21:58,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:21:58,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936984168] [2020-12-01 23:21:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 23:21:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:58,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:58,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:58,968 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:21:58,968 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:21:59,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 23:21:59,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:21:59 BoogieIcfgContainer [2020-12-01 23:21:59,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:21:59,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:21:59,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:21:59,239 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:21:59,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:51" (3/4) ... [2020-12-01 23:21:59,245 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:21:59,324 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:21:59,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:21:59,326 INFO L168 Benchmark]: Toolchain (without parser) took 74511.04 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 22.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,327 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 41.9 MB. Free memory was 21.6 MB in the beginning and 21.6 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:59,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.17 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 24.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.59 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 22.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,329 INFO L168 Benchmark]: Boogie Preprocessor took 73.88 ms. Allocated memory is still 50.3 MB. Free memory was 21.9 MB in the beginning and 32.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,330 INFO L168 Benchmark]: RCFGBuilder took 5642.06 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.9 MB in the beginning and 34.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,330 INFO L168 Benchmark]: TraceAbstraction took 68117.97 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 24.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,331 INFO L168 Benchmark]: Witness Printer took 85.70 ms. Allocated memory is still 60.8 MB. Free memory was 24.9 MB in the beginning and 22.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,335 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 41.9 MB. Free memory was 21.6 MB in the beginning and 21.6 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.17 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 24.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.59 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 22.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.88 ms. Allocated memory is still 50.3 MB. Free memory was 21.9 MB in the beginning and 32.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5642.06 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.9 MB in the beginning and 34.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 68117.97 ms. Allocated memory is still 60.8 MB. Free memory was 33.8 MB in the beginning and 24.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 85.70 ms. Allocated memory is still 60.8 MB. Free memory was 24.9 MB in the beginning and 22.3 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: 177]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L48] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L49] COND TRUE (hx < hy) || (lx < ly) [L50] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 67.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 33.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 2 SDslu, 334 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 56.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 31.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2549 SizeOfPredicates, 11 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...