./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_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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 [2020-11-30 00:18:41,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:18:41,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:18:42,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:18:42,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:18:42,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:18:42,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:18:42,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:18:42,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:18:42,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:18:42,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:18:42,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:18:42,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:18:42,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:18:42,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:18:42,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:18:42,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:18:42,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:18:42,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:18:42,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:18:42,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:18:42,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:18:42,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:18:42,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:18:42,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:18:42,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:18:42,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:18:42,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:18:42,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:18:42,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:18:42,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:18:42,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:18:42,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:18:42,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:18:42,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:18:42,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:18:42,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:18:42,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:18:42,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:18:42,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:18:42,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:18:42,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:18:42,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:18:42,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:18:42,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:18:42,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:18:42,205 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:18:42,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:18:42,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:18:42,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:18:42,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:18:42,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:18:42,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:18:42,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:18:42,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:18:42,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:18:42,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:18:42,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:18:42,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:18:42,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:18:42,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:18:42,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:18:42,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:18:42,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:18:42,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:18:42,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:18:42,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:18:42,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:18:42,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:18:42,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:18:42,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:18:42,213 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_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-11-30 00:18:42,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:18:42,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:18:42,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:18:42,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:18:42,527 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:18:42,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-30 00:18:42,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/a9159a76c/a65619c1053740459c47e68930c9c4cb/FLAGfab33624a [2020-11-30 00:18:43,226 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:18:43,226 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-30 00:18:43,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/a9159a76c/a65619c1053740459c47e68930c9c4cb/FLAGfab33624a [2020-11-30 00:18:43,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/a9159a76c/a65619c1053740459c47e68930c9c4cb [2020-11-30 00:18:43,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:18:43,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:18:43,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:43,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:18:43,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:18:43,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:43,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4b2a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43, skipping insertion in model container [2020-11-30 00:18:43,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:43,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:18:43,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:18:43,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:43,882 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:18:43,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:43,958 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:18:43,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43 WrapperNode [2020-11-30 00:18:43,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:43,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:43,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:18:43,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:18:43,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:43,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:44,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:18:44,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:18:44,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:18:44,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... [2020-11-30 00:18:44,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:18:44,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:18:44,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:18:44,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:18:44,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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 [2020-11-30 00:18:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:18:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:18:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:18:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:18:44,391 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:18:44,391 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:18:44,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:44 BoogieIcfgContainer [2020-11-30 00:18:44,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:18:44,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:18:44,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:18:44,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:18:44,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:18:43" (1/3) ... [2020-11-30 00:18:44,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135271ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:44, skipping insertion in model container [2020-11-30 00:18:44,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:43" (2/3) ... [2020-11-30 00:18:44,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135271ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:44, skipping insertion in model container [2020-11-30 00:18:44,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:44" (3/3) ... [2020-11-30 00:18:44,425 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-11-30 00:18:44,437 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:18:44,457 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:18:44,484 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:18:44,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:18:44,517 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:18:44,518 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:18:44,518 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:18:44,518 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:18:44,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:18:44,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:18:44,519 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:18:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 00:18:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:18:44,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:44,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:44,569 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:44,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-30 00:18:44,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:44,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136720652] [2020-11-30 00:18:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:44,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136720652] [2020-11-30 00:18:44,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:44,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:18:44,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334130827] [2020-11-30 00:18:44,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:18:44,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:44,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:18:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:18:44,786 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-30 00:18:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:44,804 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-30 00:18:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:18:44,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 00:18:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:44,815 INFO L225 Difference]: With dead ends: 25 [2020-11-30 00:18:44,816 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 00:18:44,819 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 [2020-11-30 00:18:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 00:18:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 00:18:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:18:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-30 00:18:44,914 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-30 00:18:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:44,915 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-30 00:18:44,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:18:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-30 00:18:44,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:18:44,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:44,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:44,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:18:44,917 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-30 00:18:44,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:44,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781515211] [2020-11-30 00:18:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:44,959 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:18:44,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:18:45,005 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:18:45,006 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:18:45,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:18:45,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:18:45 BoogieIcfgContainer [2020-11-30 00:18:45,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:18:45,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:18:45,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:18:45,035 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:18:45,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:44" (3/4) ... [2020-11-30 00:18:45,040 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:18:45,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:18:45,043 INFO L168 Benchmark]: Toolchain (without parser) took 1446.41 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.1 MB in the beginning and 86.9 MB in the end (delta: -20.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:45,044 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:45,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.59 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 71.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:45,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.38 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:45,046 INFO L168 Benchmark]: Boogie Preprocessor took 38.30 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 69.4 MB in the end (delta: 739.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:45,047 INFO L168 Benchmark]: RCFGBuilder took 334.55 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 58.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:45,048 INFO L168 Benchmark]: TraceAbstraction took 638.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.0 MB in the beginning and 86.9 MB in the end (delta: -28.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:45,049 INFO L168 Benchmark]: Witness Printer took 5.54 ms. Allocated memory is still 113.2 MB. Free memory is still 86.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:45,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 94.4 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.59 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 71.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.38 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.30 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 69.4 MB in the end (delta: 739.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 334.55 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 58.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 638.53 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.0 MB in the beginning and 86.9 MB in the end (delta: -28.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.54 ms. Allocated memory is still 113.2 MB. Free memory is still 86.9 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: 0.4s, 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 [2020-11-30 00:18:48,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:18:48,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:18:48,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:18:48,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:18:48,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:18:48,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:18:48,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:18:48,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:18:48,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:18:48,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:18:48,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:18:48,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:18:48,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:18:48,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:18:48,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:18:48,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:18:48,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:18:48,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:18:48,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:18:48,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:18:48,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:18:48,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:18:48,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:18:48,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:18:48,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:18:48,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:18:48,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:18:48,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:18:48,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:18:48,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:18:48,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:18:48,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:18:48,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:18:48,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:18:48,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:18:48,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:18:48,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:18:48,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:18:48,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:18:48,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:18:48,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:18:48,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:18:48,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:18:48,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:18:48,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:18:48,235 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:18:48,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:18:48,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:18:48,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:18:48,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:18:48,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:18:48,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:18:48,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:18:48,238 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:18:48,238 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:18:48,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:18:48,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:18:48,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:18:48,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:18:48,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:18:48,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:18:48,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:18:48,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:18:48,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:18:48,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:18:48,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:18:48,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:18:48,241 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:18:48,241 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:18:48,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:18:48,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:18:48,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:18:48,242 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_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-11-30 00:18:48,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:18:48,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:18:48,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:18:48,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:18:48,797 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:18:48,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-30 00:18:48,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/11cf0790a/1c46d3ea649f4951b74d9a3bdfbd9591/FLAG3d64cd976 [2020-11-30 00:18:49,584 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:18:49,585 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-30 00:18:49,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/11cf0790a/1c46d3ea649f4951b74d9a3bdfbd9591/FLAG3d64cd976 [2020-11-30 00:18:49,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/data/11cf0790a/1c46d3ea649f4951b74d9a3bdfbd9591 [2020-11-30 00:18:49,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:18:49,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:18:49,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:49,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:18:49,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:18:49,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:49" (1/1) ... [2020-11-30 00:18:49,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3375f91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:49, skipping insertion in model container [2020-11-30 00:18:49,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:49" (1/1) ... [2020-11-30 00:18:49,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:18:49,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:18:50,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:50,195 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:18:50,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:50,294 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:18:50,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50 WrapperNode [2020-11-30 00:18:50,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:50,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:50,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:18:50,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:18:50,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:50,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:18:50,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:18:50,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:18:50,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... [2020-11-30 00:18:50,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:18:50,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:18:50,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:18:50,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:18:50,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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 [2020-11-30 00:18:50,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:18:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:18:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:18:50,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:18:57,307 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:18:57,323 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-30 00:18:57,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:57 BoogieIcfgContainer [2020-11-30 00:18:57,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:18:57,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:18:57,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:18:57,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:18:57,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:18:49" (1/3) ... [2020-11-30 00:18:57,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24efe2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:57, skipping insertion in model container [2020-11-30 00:18:57,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:50" (2/3) ... [2020-11-30 00:18:57,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24efe2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:57, skipping insertion in model container [2020-11-30 00:18:57,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:57" (3/3) ... [2020-11-30 00:18:57,346 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-11-30 00:18:57,359 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:18:57,388 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:18:57,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:18:57,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:18:57,465 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:18:57,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:18:57,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:18:57,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:18:57,467 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:18:57,467 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:18:57,467 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:18:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 00:18:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:18:57,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:57,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:57,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:57,511 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-30 00:18:57,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:18:57,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551103278] [2020-11-30 00:18:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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 [2020-11-30 00:18:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:59,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:18:59,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:59,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:18:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:59,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551103278] [2020-11-30 00:18:59,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:59,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:18:59,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891287012] [2020-11-30 00:18:59,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:18:59,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:18:59,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:18:59,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:18:59,389 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-30 00:18:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:59,408 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-30 00:18:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:18:59,410 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-30 00:18:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:59,420 INFO L225 Difference]: With dead ends: 25 [2020-11-30 00:18:59,420 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 00:18:59,423 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 [2020-11-30 00:18:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 00:18:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 00:18:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 00:18:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-30 00:18:59,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-30 00:18:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:59,463 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-30 00:18:59,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:18:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-30 00:18:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:18:59,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:59,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:59,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:18:59,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:18:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-30 00:18:59,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:18:59,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640661926] [2020-11-30 00:18:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/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 [2020-11-30 00:19:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:19:06,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:19:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:19:14,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:19:14,190 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:19:14,190 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:19:14,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:19:14,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:19:14 BoogieIcfgContainer [2020-11-30 00:19:14,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:19:14,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:19:14,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:19:14,433 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:19:14,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:57" (3/4) ... [2020-11-30 00:19:14,446 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:19:14,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b1d9a13c-1576-4d01-a5fd-1016a9e808f9/bin/uautomizer/witness.graphml [2020-11-30 00:19:14,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:19:14,495 INFO L168 Benchmark]: Toolchain (without parser) took 24562.84 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 33.2 MB in the beginning and 61.4 MB in the end (delta: -28.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:14,495 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 67.1 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:14,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.05 ms. Allocated memory is still 67.1 MB. Free memory was 52.0 MB in the beginning and 50.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:14,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.45 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 48.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:14,498 INFO L168 Benchmark]: Boogie Preprocessor took 30.83 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 47.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:14,499 INFO L168 Benchmark]: RCFGBuilder took 6915.11 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 35.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:14,500 INFO L168 Benchmark]: TraceAbstraction took 17103.68 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 63.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:14,501 INFO L168 Benchmark]: Witness Printer took 60.15 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 61.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:14,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 67.1 MB. Free memory is still 49.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.05 ms. Allocated memory is still 67.1 MB. Free memory was 52.0 MB in the beginning and 50.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.45 ms. Allocated memory is still 67.1 MB. Free memory was 50.0 MB in the beginning and 48.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.83 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 47.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6915.11 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 35.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17103.68 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 63.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.15 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 61.4 MB in the end (delta: 1.9 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: 16.9s, 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, 8.1s SatisfiabilityAnalysisTime, 0.1s 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...