./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cdfpl/sine_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54a68f41 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/floats-cdfpl/sine_2.i -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 8771fe52d76e2ea5bc3e8e7989f8459d27e5992c ........................................................................................................................................................................................................................................................................... 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/floats-cdfpl/sine_2.i -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 8771fe52d76e2ea5bc3e8e7989f8459d27e5992c ...................................................................................................................................................................................................................................................................................... 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 0.2.1-54a68f4 [2020-12-03 17:43:40,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 17:43:40,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 17:43:40,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 17:43:40,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 17:43:40,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 17:43:40,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 17:43:40,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 17:43:40,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 17:43:40,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 17:43:40,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 17:43:40,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 17:43:40,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 17:43:40,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 17:43:40,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 17:43:40,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 17:43:40,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 17:43:40,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 17:43:40,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 17:43:40,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 17:43:40,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 17:43:40,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 17:43:40,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 17:43:40,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 17:43:40,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 17:43:40,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 17:43:40,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 17:43:41,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 17:43:41,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 17:43:41,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 17:43:41,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 17:43:41,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 17:43:41,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 17:43:41,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 17:43:41,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 17:43:41,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 17:43:41,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 17:43:41,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 17:43:41,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 17:43:41,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 17:43:41,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 17:43:41,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-03 17:43:41,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 17:43:41,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 17:43:41,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 17:43:41,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 17:43:41,087 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 17:43:41,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 17:43:41,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 17:43:41,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 17:43:41,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 17:43:41,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 17:43:41,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 17:43:41,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 17:43:41,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 17:43:41,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 17:43:41,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 17:43:41,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 17:43:41,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 17:43:41,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 17:43:41,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 17:43:41,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 17:43:41,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 17:43:41,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 17:43:41,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 17:43:41,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 17:43:41,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-03 17:43:41,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 17:43:41,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 17:43:41,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 17:43:41,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8771fe52d76e2ea5bc3e8e7989f8459d27e5992c [2020-12-03 17:43:41,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 17:43:41,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 17:43:41,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 17:43:41,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 17:43:41,588 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 17:43:41,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/sine_2.i [2020-12-03 17:43:41,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4bf57e8/a1ec0fe0fef1459d9c82c40b4d8053f4/FLAGa7e86601b [2020-12-03 17:43:42,221 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 17:43:42,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/sine_2.i [2020-12-03 17:43:42,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4bf57e8/a1ec0fe0fef1459d9c82c40b4d8053f4/FLAGa7e86601b [2020-12-03 17:43:42,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4bf57e8/a1ec0fe0fef1459d9c82c40b4d8053f4 [2020-12-03 17:43:42,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 17:43:42,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 17:43:42,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 17:43:42,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 17:43:42,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 17:43:42,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7859d9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42, skipping insertion in model container [2020-12-03 17:43:42,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 17:43:42,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 17:43:42,791 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/sine_2.i[1143,1156] [2020-12-03 17:43:42,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:43:42,812 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 17:43:42,832 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/sine_2.i[1143,1156] [2020-12-03 17:43:42,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:43:42,850 INFO L208 MainTranslator]: Completed translation [2020-12-03 17:43:42,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42 WrapperNode [2020-12-03 17:43:42,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 17:43:42,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 17:43:42,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 17:43:42,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 17:43:42,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 17:43:42,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 17:43:42,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 17:43:42,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 17:43:42,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (1/1) ... [2020-12-03 17:43:42,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 17:43:42,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 17:43:42,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 17:43:42,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 17:43:42,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (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 [2020-12-03 17:43:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 17:43:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 17:43:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 17:43:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 17:43:43,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 17:43:43,297 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-03 17:43:43,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:43:43 BoogieIcfgContainer [2020-12-03 17:43:43,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 17:43:43,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 17:43:43,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 17:43:43,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 17:43:43,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:43:42" (1/3) ... [2020-12-03 17:43:43,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d649d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:43:43, skipping insertion in model container [2020-12-03 17:43:43,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:42" (2/3) ... [2020-12-03 17:43:43,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d649d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:43:43, skipping insertion in model container [2020-12-03 17:43:43,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:43:43" (3/3) ... [2020-12-03 17:43:43,310 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_2.i [2020-12-03 17:43:43,334 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 17:43:43,339 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 17:43:43,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 17:43:43,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 17:43:43,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 17:43:43,386 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 17:43:43,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 17:43:43,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 17:43:43,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 17:43:43,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 17:43:43,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 17:43:43,411 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-03 17:43:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 17:43:43,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:43:43,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 17:43:43,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 17:43:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:43:43,449 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-12-03 17:43:43,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 17:43:43,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588616316] [2020-12-03 17:43:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 17:43:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 17:43:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:43:43,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588616316] [2020-12-03 17:43:43,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 17:43:43,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 17:43:43,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546387439] [2020-12-03 17:43:43,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 17:43:43,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 17:43:43,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 17:43:43,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 17:43:43,759 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-12-03 17:43:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 17:43:43,787 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-03 17:43:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 17:43:43,789 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-03 17:43:43,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 17:43:43,817 INFO L225 Difference]: With dead ends: 19 [2020-12-03 17:43:43,820 INFO L226 Difference]: Without dead ends: 7 [2020-12-03 17:43:43,826 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 [2020-12-03 17:43:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-03 17:43:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-03 17:43:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-03 17:43:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-12-03 17:43:43,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-12-03 17:43:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 17:43:43,882 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-12-03 17:43:43,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 17:43:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-12-03 17:43:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 17:43:43,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:43:43,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 17:43:43,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 17:43:43,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 17:43:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:43:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-12-03 17:43:43,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 17:43:43,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976984219] [2020-12-03 17:43:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 17:43:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:43:43,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:43:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:43:43,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:43:43,959 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-03 17:43:43,960 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 17:43:43,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 17:43:43,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:43:43 BoogieIcfgContainer [2020-12-03 17:43:43,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 17:43:43,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 17:43:43,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 17:43:43,989 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 17:43:43,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:43:43" (3/4) ... [2020-12-03 17:43:43,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 17:43:43,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 17:43:43,998 INFO L168 Benchmark]: Toolchain (without parser) took 1428.58 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 33.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:43:43,999 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 35.7 MB. Free memory is still 18.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:43:44,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.21 ms. Allocated memory is still 44.0 MB. Free memory was 25.6 MB in the beginning and 25.8 MB in the end (delta: -207.8 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-12-03 17:43:44,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:43:44,002 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 ms. Allocated memory is still 44.0 MB. Free memory was 24.3 MB in the beginning and 23.4 MB in the end (delta: 938.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:43:44,003 INFO L168 Benchmark]: RCFGBuilder took 384.23 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 19.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-03 17:43:44,004 INFO L168 Benchmark]: TraceAbstraction took 687.18 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.9 MB in the beginning and 33.9 MB in the end (delta: -15.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:43:44,005 INFO L168 Benchmark]: Witness Printer took 6.07 ms. Allocated memory is still 54.5 MB. Free memory was 33.7 MB in the beginning and 33.5 MB in the end (delta: 257.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:43:44,010 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 35.7 MB. Free memory is still 18.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.21 ms. Allocated memory is still 44.0 MB. Free memory was 25.6 MB in the beginning and 25.8 MB in the end (delta: -207.8 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.86 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.59 ms. Allocated memory is still 44.0 MB. Free memory was 24.3 MB in the beginning and 23.4 MB in the end (delta: 938.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 384.23 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 19.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 687.18 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 18.9 MB in the beginning and 33.9 MB in the end (delta: -15.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.07 ms. Allocated memory is still 54.5 MB. Free memory was 33.7 MB in the beginning and 33.5 MB in the end (delta: 257.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 28]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 25. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25] float result = x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L27] COND TRUE !(result <= 1.0f && result >= -1.0f) [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 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=11occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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 0.2.1-54a68f4 [2020-12-03 17:43:46,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 17:43:46,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 17:43:46,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 17:43:46,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 17:43:46,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 17:43:46,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 17:43:46,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 17:43:46,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 17:43:46,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 17:43:46,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 17:43:46,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 17:43:46,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 17:43:46,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 17:43:46,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 17:43:46,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 17:43:46,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 17:43:46,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 17:43:46,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 17:43:46,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 17:43:46,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 17:43:46,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 17:43:46,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 17:43:46,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 17:43:46,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 17:43:46,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 17:43:46,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 17:43:46,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 17:43:46,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 17:43:46,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 17:43:46,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 17:43:46,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 17:43:46,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 17:43:46,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 17:43:46,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 17:43:46,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 17:43:46,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 17:43:46,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 17:43:46,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 17:43:46,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 17:43:46,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 17:43:46,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-03 17:43:46,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 17:43:46,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 17:43:46,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 17:43:46,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 17:43:46,937 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 17:43:46,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 17:43:46,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 17:43:46,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 17:43:46,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 17:43:46,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 17:43:46,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 17:43:46,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 17:43:46,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 17:43:46,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 17:43:46,940 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 17:43:46,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 17:43:46,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 17:43:46,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 17:43:46,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 17:43:46,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 17:43:46,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 17:43:46,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 17:43:46,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 17:43:46,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 17:43:46,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 17:43:46,944 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-03 17:43:46,945 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 17:43:46,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 17:43:46,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 17:43:46,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 17:43:46,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8771fe52d76e2ea5bc3e8e7989f8459d27e5992c [2020-12-03 17:43:47,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 17:43:47,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 17:43:47,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 17:43:47,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 17:43:47,375 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 17:43:47,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/sine_2.i [2020-12-03 17:43:47,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9758702/7f99692287c54eb38396770007f8ade2/FLAG9b760d8a2 [2020-12-03 17:43:48,108 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 17:43:48,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/sine_2.i [2020-12-03 17:43:48,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9758702/7f99692287c54eb38396770007f8ade2/FLAG9b760d8a2 [2020-12-03 17:43:48,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed9758702/7f99692287c54eb38396770007f8ade2 [2020-12-03 17:43:48,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 17:43:48,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 17:43:48,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 17:43:48,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 17:43:48,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 17:43:48,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62820daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48, skipping insertion in model container [2020-12-03 17:43:48,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 17:43:48,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 17:43:48,687 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/sine_2.i[1143,1156] [2020-12-03 17:43:48,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:43:48,709 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 17:43:48,731 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/sine_2.i[1143,1156] [2020-12-03 17:43:48,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:43:48,752 INFO L208 MainTranslator]: Completed translation [2020-12-03 17:43:48,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48 WrapperNode [2020-12-03 17:43:48,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 17:43:48,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 17:43:48,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 17:43:48,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 17:43:48,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 17:43:48,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 17:43:48,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 17:43:48,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 17:43:48,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (1/1) ... [2020-12-03 17:43:48,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 17:43:48,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 17:43:48,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 17:43:48,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 17:43:48,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (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 [2020-12-03 17:43:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 17:43:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 17:43:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 17:43:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 17:43:51,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 17:43:51,627 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-03 17:43:51,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:43:51 BoogieIcfgContainer [2020-12-03 17:43:51,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 17:43:51,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 17:43:51,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 17:43:51,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 17:43:51,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:43:48" (1/3) ... [2020-12-03 17:43:51,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1ea7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:43:51, skipping insertion in model container [2020-12-03 17:43:51,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:43:48" (2/3) ... [2020-12-03 17:43:51,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1ea7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:43:51, skipping insertion in model container [2020-12-03 17:43:51,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:43:51" (3/3) ... [2020-12-03 17:43:51,639 INFO L111 eAbstractionObserver]: Analyzing ICFG sine_2.i [2020-12-03 17:43:51,655 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 17:43:51,659 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 17:43:51,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 17:43:51,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 17:43:51,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 17:43:51,702 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 17:43:51,702 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 17:43:51,703 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 17:43:51,703 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 17:43:51,703 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 17:43:51,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 17:43:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-03 17:43:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 17:43:51,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:43:51,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 17:43:51,729 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 17:43:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:43:51,737 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2020-12-03 17:43:51,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:43:51,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823974143] [2020-12-03 17:43:51,751 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 [2020-12-03 17:43:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 17:43:52,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-03 17:43:52,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 17:43:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:43:52,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 17:43:52,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823974143] [2020-12-03 17:43:52,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 17:43:52,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 17:43:52,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087674398] [2020-12-03 17:43:52,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 17:43:52,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-03 17:43:52,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 17:43:52,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 17:43:52,440 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-12-03 17:43:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 17:43:52,457 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-03 17:43:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 17:43:52,458 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-03 17:43:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 17:43:52,468 INFO L225 Difference]: With dead ends: 19 [2020-12-03 17:43:52,469 INFO L226 Difference]: Without dead ends: 7 [2020-12-03 17:43:52,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 17:43:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-03 17:43:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-03 17:43:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-03 17:43:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2020-12-03 17:43:52,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2020-12-03 17:43:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 17:43:52,508 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2020-12-03 17:43:52,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 17:43:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-12-03 17:43:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 17:43:52,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:43:52,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 17:43:52,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 17:43:52,725 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 17:43:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:43:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2020-12-03 17:43:52,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:43:52,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410732649] [2020-12-03 17:43:52,729 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 [2020-12-03 17:46:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:46:40,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:47:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:47:05,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:47:05,463 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-03 17:47:05,464 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 17:47:05,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-03 17:47:05,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:47:05 BoogieIcfgContainer [2020-12-03 17:47:05,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 17:47:05,692 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 17:47:05,692 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 17:47:05,692 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 17:47:05,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:43:51" (3/4) ... [2020-12-03 17:47:05,695 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 17:47:05,733 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-03 17:47:05,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 17:47:05,737 INFO L168 Benchmark]: Toolchain (without parser) took 197271.58 ms. Allocated memory is still 52.4 MB. Free memory was 36.5 MB in the beginning and 27.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-12-03 17:47:05,738 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory is still 26.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:47:05,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.58 ms. Allocated memory is still 52.4 MB. Free memory was 36.3 MB in the beginning and 26.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:47:05,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 52.4 MB. Free memory was 26.1 MB in the beginning and 24.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:47:05,740 INFO L168 Benchmark]: Boogie Preprocessor took 64.42 ms. Allocated memory is still 52.4 MB. Free memory was 24.6 MB in the beginning and 23.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:47:05,741 INFO L168 Benchmark]: RCFGBuilder took 2764.31 ms. Allocated memory is still 52.4 MB. Free memory was 23.3 MB in the beginning and 26.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-03 17:47:05,742 INFO L168 Benchmark]: TraceAbstraction took 194060.25 ms. Allocated memory is still 52.4 MB. Free memory was 25.9 MB in the beginning and 29.2 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:47:05,743 INFO L168 Benchmark]: Witness Printer took 42.44 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:47:05,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 41.9 MB. Free memory is still 26.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.58 ms. Allocated memory is still 52.4 MB. Free memory was 36.3 MB in the beginning and 26.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 52.4 MB. Free memory was 26.1 MB in the beginning and 24.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.42 ms. Allocated memory is still 52.4 MB. Free memory was 24.6 MB in the beginning and 23.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2764.31 ms. Allocated memory is still 52.4 MB. Free memory was 23.3 MB in the beginning and 26.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 194060.25 ms. Allocated memory is still 52.4 MB. Free memory was 25.9 MB in the beginning and 29.2 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 42.44 ms. Allocated memory is still 52.4 MB. Free memory was 29.2 MB in the beginning and 27.5 MB in the end (delta: 1.7 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: 28]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25] float result = x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L27] COND TRUE !(result <= 1.0f && result >= -1.0f) [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 193.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 168.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 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 proved your program to be incorrect! Received shutdown request...