./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_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_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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 77dfb89b316b35597df251f3cfe048e45df64ba9 .................................................................................................................................................................................................................................................................................. 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_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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 77dfb89b316b35597df251f3cfe048e45df64ba9 .............................................................................................................................................................................................................................................................................................. 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 01:12:37,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:12:37,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:12:37,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:12:37,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:12:37,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:12:37,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:12:37,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:12:37,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:12:37,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:12:37,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:12:37,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:12:37,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:12:37,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:12:37,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:12:37,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:12:37,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:12:37,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:12:37,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:12:37,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:12:37,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:12:37,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:12:37,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:12:37,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:12:37,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:12:37,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:12:37,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:12:37,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:12:37,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:12:37,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:12:37,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:12:37,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:12:37,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:12:37,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:12:37,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:12:37,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:12:37,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:12:37,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:12:37,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:12:37,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:12:37,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:12:37,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:12:37,243 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:12:37,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:12:37,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:12:37,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:12:37,250 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:12:37,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:12:37,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:12:37,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:12:37,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:12:37,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:12:37,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:12:37,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:12:37,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:12:37,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:12:37,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:12:37,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:12:37,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:12:37,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:12:37,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:12:37,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:12:37,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:12:37,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:12:37,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:12:37,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:12:37,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:12:37,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:12:37,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:12:37,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:12:37,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:12:37,259 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_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dfb89b316b35597df251f3cfe048e45df64ba9 [2020-11-30 01:12:37,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:12:37,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:12:37,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:12:37,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:12:37,664 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:12:37,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2020-11-30 01:12:37,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/006a101d7/37c32979ec934f13803f836694d23986/FLAGfd3ca0c10 [2020-11-30 01:12:38,318 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:12:38,318 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2020-11-30 01:12:38,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/006a101d7/37c32979ec934f13803f836694d23986/FLAGfd3ca0c10 [2020-11-30 01:12:38,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/006a101d7/37c32979ec934f13803f836694d23986 [2020-11-30 01:12:38,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:12:38,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:12:38,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:38,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:12:38,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:12:38,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:38,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6549732a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38, skipping insertion in model container [2020-11-30 01:12:38,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:38,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:12:38,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:12:38,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:38,916 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:12:38,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:38,981 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:12:38,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38 WrapperNode [2020-11-30 01:12:38,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:38,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:38,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:12:38,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:12:38,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:39,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:12:39,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:12:39,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:12:39,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... [2020-11-30 01:12:39,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:12:39,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:12:39,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:12:39,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:12:39,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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 01:12:39,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:12:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:12:39,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:12:39,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:12:39,369 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:12:39,369 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 01:12:39,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:39 BoogieIcfgContainer [2020-11-30 01:12:39,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:12:39,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:12:39,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:12:39,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:12:39,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:12:38" (1/3) ... [2020-11-30 01:12:39,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4144d9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:39, skipping insertion in model container [2020-11-30 01:12:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:38" (2/3) ... [2020-11-30 01:12:39,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4144d9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:12:39, skipping insertion in model container [2020-11-30 01:12:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:39" (3/3) ... [2020-11-30 01:12:39,380 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2020-11-30 01:12:39,393 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:12:39,397 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:12:39,411 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:12:39,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:12:39,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:12:39,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:12:39,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:12:39,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:12:39,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:12:39,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:12:39,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:12:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 01:12:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:12:39,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:39,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:39,464 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:12:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-11-30 01:12:39,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:39,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319993378] [2020-11-30 01:12:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:12:39,654 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 01:12:39,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319993378] [2020-11-30 01:12:39,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:12:39,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:12:39,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951953640] [2020-11-30 01:12:39,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:12:39,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:12:39,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:12:39,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:12:39,698 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 01:12:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:12:39,716 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-30 01:12:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:12:39,718 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:12:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:12:39,726 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:12:39,726 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 01:12:39,729 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 01:12:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 01:12:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 01:12:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 01:12:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-30 01:12:39,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-11-30 01:12:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:12:39,771 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-30 01:12:39,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:12:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-30 01:12:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:12:39,773 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:12:39,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:12:39,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:12:39,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:12:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:12:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-11-30 01:12:39,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:12:39,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13050189] [2020-11-30 01:12:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:12:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:39,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:12:39,857 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:12:39,901 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:12:39,901 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:12:39,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:12:39,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:12:39 BoogieIcfgContainer [2020-11-30 01:12:39,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:12:39,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:12:39,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:12:39,929 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:12:39,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:12:39" (3/4) ... [2020-11-30 01:12:39,933 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:12:39,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:12:39,937 INFO L168 Benchmark]: Toolchain (without parser) took 1275.86 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.4 MB in the beginning and 81.4 MB in the end (delta: -15.0 MB). Peak memory consumption was 718.9 kB. Max. memory is 16.1 GB. [2020-11-30 01:12:39,939 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 94.4 MB. Free memory was 51.5 MB in the beginning and 51.4 MB in the end (delta: 78.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:39,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.74 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 70.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:39,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.31 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 68.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:39,943 INFO L168 Benchmark]: Boogie Preprocessor took 52.08 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:39,944 INFO L168 Benchmark]: RCFGBuilder took 274.86 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 55.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:12:39,945 INFO L168 Benchmark]: TraceAbstraction took 555.15 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.4 MB in the beginning and 81.4 MB in the end (delta: -26.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:39,946 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 113.2 MB. Free memory is still 81.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:12:39,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 94.4 MB. Free memory was 51.5 MB in the beginning and 51.4 MB in the end (delta: 78.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.74 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 70.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.31 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 68.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.08 ms. Allocated memory is still 94.4 MB. Free memory was 68.7 MB in the beginning and 67.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 274.86 ms. Allocated memory is still 94.4 MB. Free memory was 67.6 MB in the beginning and 55.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 555.15 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.4 MB in the beginning and 81.4 MB in the end (delta: -26.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.75 ms. Allocated memory is still 113.2 MB. Free memory is still 81.4 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 37. 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); [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; [L35] x = x - f(x)/fp(x) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_7.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 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: 17 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=18occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 01:12:42,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:12:42,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:12:42,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:12:42,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:12:42,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:12:42,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:12:42,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:12:42,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:12:42,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:12:42,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:12:42,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:12:42,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:12:42,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:12:42,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:12:42,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:12:42,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:12:42,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:12:42,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:12:42,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:12:42,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:12:42,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:12:42,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:12:42,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:12:42,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:12:42,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:12:42,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:12:42,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:12:42,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:12:42,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:12:42,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:12:42,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:12:42,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:12:42,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:12:42,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:12:42,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:12:42,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:12:42,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:12:42,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:12:42,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:12:42,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:12:42,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:12:42,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:12:42,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:12:42,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:12:42,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:12:42,654 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:12:42,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:12:42,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:12:42,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:12:42,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:12:42,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:12:42,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:12:42,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:12:42,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:12:42,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:12:42,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:12:42,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:12:42,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:12:42,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:12:42,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:12:42,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:12:42,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:12:42,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:12:42,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:12:42,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:12:42,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:12:42,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:12:42,663 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:12:42,663 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:12:42,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:12:42,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:12:42,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:12:42,665 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_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dfb89b316b35597df251f3cfe048e45df64ba9 [2020-11-30 01:12:43,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:12:43,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:12:43,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:12:43,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:12:43,202 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:12:43,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2020-11-30 01:12:43,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/860f3905f/1a87e3a008de4dd081fbd1578fc6a9fd/FLAG6366dd1c0 [2020-11-30 01:12:43,922 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:12:43,923 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2020-11-30 01:12:43,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/860f3905f/1a87e3a008de4dd081fbd1578fc6a9fd/FLAG6366dd1c0 [2020-11-30 01:12:44,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/data/860f3905f/1a87e3a008de4dd081fbd1578fc6a9fd [2020-11-30 01:12:44,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:12:44,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:12:44,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:44,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:12:44,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:12:44,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdf6f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44, skipping insertion in model container [2020-11-30 01:12:44,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:12:44,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:12:44,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:44,686 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:12:44,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:12:44,782 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:12:44,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44 WrapperNode [2020-11-30 01:12:44,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:12:44,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:44,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:12:44,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:12:44,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:12:44,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:12:44,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:12:44,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:12:44,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... [2020-11-30 01:12:44,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:12:44,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:12:44,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:12:44,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:12:44,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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 01:12:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:12:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:12:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:12:45,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:13:04,770 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:13:04,771 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 01:13:04,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:04 BoogieIcfgContainer [2020-11-30 01:13:04,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:13:04,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:13:04,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:13:04,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:13:04,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:12:44" (1/3) ... [2020-11-30 01:13:04,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190d80d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:04, skipping insertion in model container [2020-11-30 01:13:04,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:12:44" (2/3) ... [2020-11-30 01:13:04,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190d80d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:04, skipping insertion in model container [2020-11-30 01:13:04,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:04" (3/3) ... [2020-11-30 01:13:04,783 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2020-11-30 01:13:04,797 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:13:04,802 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:13:04,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:13:04,848 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:13:04,849 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:13:04,849 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:13:04,849 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:13:04,849 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:13:04,849 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:13:04,850 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:13:04,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:13:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 01:13:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:13:04,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:04,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:04,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:04,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:04,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1296243724, now seen corresponding path program 1 times [2020-11-30 01:13:04,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:04,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398150144] [2020-11-30 01:13:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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 01:13:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:08,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:13:08,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:08,870 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 01:13:08,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:08,876 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 01:13:08,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398150144] [2020-11-30 01:13:08,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:08,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:13:08,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364812100] [2020-11-30 01:13:08,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:13:08,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:08,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:13:08,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:13:08,902 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 01:13:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:08,922 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-30 01:13:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:13:08,924 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:13:08,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:08,933 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:13:08,934 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 01:13:08,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 01:13:08,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 01:13:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 01:13:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 01:13:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-11-30 01:13:08,969 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-11-30 01:13:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:08,970 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-11-30 01:13:08,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:13:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-11-30 01:13:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:13:08,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:08,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:09,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:13:09,188 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:09,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1997308302, now seen corresponding path program 1 times [2020-11-30 01:13:09,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:09,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596612272] [2020-11-30 01:13:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/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 01:13:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:24,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:20:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:20:47,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:20:47,594 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:20:47,595 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:20:47,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:20:47,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:20:47 BoogieIcfgContainer [2020-11-30 01:20:47,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:20:47,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:20:47,843 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:20:47,843 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:20:47,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:04" (3/4) ... [2020-11-30 01:20:47,855 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:20:47,902 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_42bc3caf-37eb-4c05-92cd-cd03acbc8263/bin/uautomizer/witness.graphml [2020-11-30 01:20:47,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:20:47,908 INFO L168 Benchmark]: Toolchain (without parser) took 483573.24 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 36.4 MB in the beginning and 63.0 MB in the end (delta: -26.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:47,912 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:20:47,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.65 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 41.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:47,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.51 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 41.0 MB in the beginning and 65.4 MB in the end (delta: -24.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:47,914 INFO L168 Benchmark]: Boogie Preprocessor took 45.63 ms. Allocated memory is still 81.8 MB. Free memory was 65.4 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:20:47,917 INFO L168 Benchmark]: RCFGBuilder took 19848.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.9 MB in the beginning and 50.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:47,917 INFO L168 Benchmark]: TraceAbstraction took 463066.78 ms. Allocated memory is still 81.8 MB. Free memory was 50.2 MB in the beginning and 40.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:47,919 INFO L168 Benchmark]: Witness Printer took 60.48 ms. Allocated memory is still 81.8 MB. Free memory was 40.1 MB in the beginning and 63.0 MB in the end (delta: -22.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:20:47,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 450.65 ms. Allocated memory is still 56.6 MB. Free memory was 36.2 MB in the beginning and 41.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.51 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 41.0 MB in the beginning and 65.4 MB in the end (delta: -24.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.63 ms. Allocated memory is still 81.8 MB. Free memory was 65.4 MB in the beginning and 63.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 19848.30 ms. Allocated memory is still 81.8 MB. Free memory was 63.9 MB in the beginning and 50.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 463066.78 ms. Allocated memory is still 81.8 MB. Free memory was 50.2 MB in the beginning and 40.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 60.48 ms. Allocated memory is still 81.8 MB. Free memory was 40.1 MB in the beginning and 63.0 MB in the end (delta: -22.9 MB). Peak memory consumption was 4.3 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); [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; [L35] x = x - f(x)/fp(x) [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; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_3_7.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 462.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 19.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 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...