./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer --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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer --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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ........................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:49,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:49,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:49,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:49,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:49,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:49,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:49,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:49,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:49,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:49,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:49,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:49,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:49,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:49,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:49,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:49,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:49,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:49,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:49,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:49,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:49,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:49,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:49,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:49,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:49,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:49,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:49,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:49,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:49,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:49,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:49,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:49,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:49,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:49,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:49,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:49,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:49,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:49,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:49,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:49,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:49,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:49,993 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:49,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:49,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:49,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:49,997 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:49,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:49,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:49,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:49,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:49,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:50,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:50,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:50,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:50,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:50,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:50,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:50,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:50,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:50,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:50,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:50,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:50,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:50,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:50,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:50,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:50,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:50,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:50,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:50,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:50,004 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:/tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-11-28 02:57:50,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:50,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:50,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:50,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:50,325 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:50,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-28 02:57:50,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/6a2b04877/74d4b94f6e534386a7356aa291b0bd8e/FLAG9b8d3940b [2020-11-28 02:57:50,879 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:50,880 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-28 02:57:50,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/6a2b04877/74d4b94f6e534386a7356aa291b0bd8e/FLAG9b8d3940b [2020-11-28 02:57:51,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/6a2b04877/74d4b94f6e534386a7356aa291b0bd8e [2020-11-28 02:57:51,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:51,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:51,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:51,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:51,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:51,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9604e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51, skipping insertion in model container [2020-11-28 02:57:51,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:51,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:51,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:51,485 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:51,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:51,518 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:51,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51 WrapperNode [2020-11-28 02:57:51,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:51,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:51,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:51,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:51,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:51,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:51,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:51,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:51,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:51,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:51,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:51,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:51,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/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 [2020-11-28 02:57:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:51,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:51,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:51,839 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:51,840 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 02:57:51,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:51 BoogieIcfgContainer [2020-11-28 02:57:51,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:51,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:51,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:51,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:51,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:51" (1/3) ... [2020-11-28 02:57:51,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52696ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:51, skipping insertion in model container [2020-11-28 02:57:51,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (2/3) ... [2020-11-28 02:57:51,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52696ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:51, skipping insertion in model container [2020-11-28 02:57:51,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:51" (3/3) ... [2020-11-28 02:57:51,856 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-11-28 02:57:51,867 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:51,874 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:51,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:57:51,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:51,911 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:51,911 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:51,927 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:51,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:51,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:51,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:51,928 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 02:57:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:51,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:51,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:51,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:51,970 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-28 02:57:51,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:51,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132099530] [2020-11-28 02:57:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:52,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132099530] [2020-11-28 02:57:52,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:52,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:52,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310869925] [2020-11-28 02:57:52,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:52,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:52,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:52,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:52,184 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 02:57:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:52,201 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-28 02:57:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:52,202 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 02:57:52,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:52,217 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:57:52,217 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 02:57:52,222 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 [2020-11-28 02:57:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 02:57:52,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:57:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:57:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-28 02:57:52,313 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-28 02:57:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:52,313 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-28 02:57:52,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-28 02:57:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:52,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:52,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:52,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:52,316 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:52,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-28 02:57:52,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:52,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902942506] [2020-11-28 02:57:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,445 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:52,446 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:57:52,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:52,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:52 BoogieIcfgContainer [2020-11-28 02:57:52,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:52,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:52,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:52,468 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:52,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:51" (3/4) ... [2020-11-28 02:57:52,472 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:57:52,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:52,474 INFO L168 Benchmark]: Toolchain (without parser) took 1216.18 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 44.4 MB in the beginning and 66.4 MB in the end (delta: -22.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:52,475 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:52,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.34 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 44.2 MB in the beginning and 68.0 MB in the end (delta: -23.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:52,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 66.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:52,477 INFO L168 Benchmark]: Boogie Preprocessor took 33.01 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 65.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:52,478 INFO L168 Benchmark]: RCFGBuilder took 251.16 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 54.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:52,478 INFO L168 Benchmark]: TraceAbstraction took 624.31 ms. Allocated memory is still 92.3 MB. Free memory was 54.2 MB in the beginning and 66.9 MB in the end (delta: -12.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:52,479 INFO L168 Benchmark]: Witness Printer took 4.10 ms. Allocated memory is still 92.3 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:52,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 45.1 MB in the beginning and 45.0 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.34 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 44.2 MB in the beginning and 68.0 MB in the end (delta: -23.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 66.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.01 ms. Allocated memory is still 92.3 MB. Free memory was 66.7 MB in the beginning and 65.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 251.16 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 54.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 624.31 ms. Allocated memory is still 92.3 MB. Free memory was 54.2 MB in the beginning and 66.9 MB in the end (delta: -12.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.10 ms. Allocated memory is still 92.3 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_7.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 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: 13 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=14occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:55,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:55,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:55,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:55,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:55,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:55,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:55,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:55,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:55,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:55,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:55,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:55,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:55,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:55,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:55,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:55,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:55,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:55,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:55,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:55,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:55,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:55,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:55,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:55,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:55,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:55,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:55,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:55,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:55,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:55,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:55,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:55,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:55,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:55,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:55,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:55,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:55,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:55,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:55,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:55,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:55,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 02:57:55,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:55,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:55,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:55,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:55,264 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:55,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:55,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:55,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:55,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:55,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:55,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:55,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:55,267 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 02:57:55,268 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 02:57:55,268 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:55,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:55,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:55,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:55,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:55,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:55,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:55,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:55,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:55,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:55,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:55,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:55,271 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 02:57:55,271 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 02:57:55,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:55,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:55,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 02:57:55,272 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:/tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-11-28 02:57:55,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:55,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:55,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:55,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:55,738 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:55,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-28 02:57:55,821 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/ef9abecbf/0f34d9655ef24275af82f05108e328cf/FLAG264c5c56e [2020-11-28 02:57:56,341 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:56,342 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-28 02:57:56,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/ef9abecbf/0f34d9655ef24275af82f05108e328cf/FLAG264c5c56e [2020-11-28 02:57:56,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/data/ef9abecbf/0f34d9655ef24275af82f05108e328cf [2020-11-28 02:57:56,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:56,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:56,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:56,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:56,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:56,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:56" (1/1) ... [2020-11-28 02:57:56,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536fe2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:56, skipping insertion in model container [2020-11-28 02:57:56,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:56" (1/1) ... [2020-11-28 02:57:56,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:56,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:56,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:56,974 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:56,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:57,010 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:57,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57 WrapperNode [2020-11-28 02:57:57,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:57,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:57,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:57,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:57,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:57,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:57,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:57,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:57,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... [2020-11-28 02:57:57,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:57,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:57,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:57,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:57,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/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 [2020-11-28 02:57:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 02:57:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:57,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:57,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:03,969 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:03,970 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 02:58:03,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:03 BoogieIcfgContainer [2020-11-28 02:58:03,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:03,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:03,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:03,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:03,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:56" (1/3) ... [2020-11-28 02:58:03,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42325bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:03, skipping insertion in model container [2020-11-28 02:58:03,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:57" (2/3) ... [2020-11-28 02:58:03,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42325bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:03, skipping insertion in model container [2020-11-28 02:58:03,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:03" (3/3) ... [2020-11-28 02:58:03,994 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-11-28 02:58:04,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:04,017 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:04,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:58:04,060 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:04,060 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:04,060 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:04,060 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:04,061 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:04,061 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:04,061 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:04,061 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 02:58:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:58:04,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:04,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:04,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:04,095 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-28 02:58:04,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:04,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780285477] [2020-11-28 02:58:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/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 [2020-11-28 02:58:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:05,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 02:58:05,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:05,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:58:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:05,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780285477] [2020-11-28 02:58:05,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:05,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 02:58:05,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162969282] [2020-11-28 02:58:05,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:05,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:58:05,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:05,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:05,458 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 02:58:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:05,476 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-28 02:58:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:05,478 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-28 02:58:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:05,503 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:58:05,508 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 02:58:05,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 02:58:05,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 02:58:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:58:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-28 02:58:05,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-28 02:58:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:05,545 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-28 02:58:05,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-28 02:58:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:58:05,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:05,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:05,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 02:58:05,771 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:05,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:05,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-28 02:58:05,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:58:05,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069381478] [2020-11-28 02:58:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/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 [2020-11-28 02:58:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:11,633 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:18,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:18,804 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 02:58:18,804 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:19,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 02:58:19,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:19 BoogieIcfgContainer [2020-11-28 02:58:19,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:19,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:19,034 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:19,034 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:19,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:03" (3/4) ... [2020-11-28 02:58:19,037 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:58:19,073 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7287ab59-87c8-4f1d-b384-c22fc892bba6/bin/uautomizer/witness.graphml [2020-11-28 02:58:19,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:19,075 INFO L168 Benchmark]: Toolchain (without parser) took 22367.14 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 28.4 MB in the beginning and 43.1 MB in the end (delta: -14.7 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:19,076 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:19,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.66 ms. Allocated memory is still 50.3 MB. Free memory was 28.2 MB in the beginning and 29.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:19,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.73 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 29.3 MB in the beginning and 49.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:19,078 INFO L168 Benchmark]: Boogie Preprocessor took 26.53 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:19,079 INFO L168 Benchmark]: RCFGBuilder took 6852.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 36.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:19,080 INFO L168 Benchmark]: TraceAbstraction took 15045.92 ms. Allocated memory is still 65.0 MB. Free memory was 35.8 MB in the beginning and 44.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:19,081 INFO L168 Benchmark]: Witness Printer took 39.33 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 43.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:19,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 33.3 MB in the beginning and 33.2 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.66 ms. Allocated memory is still 50.3 MB. Free memory was 28.2 MB in the beginning and 29.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.73 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 29.3 MB in the beginning and 49.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.53 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6852.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 36.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15045.92 ms. Allocated memory is still 65.0 MB. Free memory was 35.8 MB in the beginning and 44.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 39.33 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 43.1 MB in the end (delta: 1.8 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_7.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 7.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...