./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c .................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c ..................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:49:29,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:49:29,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:49:29,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:49:29,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:49:29,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:49:29,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:49:29,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:49:29,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:49:29,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:49:29,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:49:29,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:49:29,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:49:29,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:49:29,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:49:29,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:49:29,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:49:29,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:49:29,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:49:29,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:49:29,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:49:29,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:49:29,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:49:29,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:49:29,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:49:29,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:49:29,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:49:29,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:49:29,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:49:29,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:49:29,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:49:29,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:49:29,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:49:29,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:49:29,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:49:29,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:49:29,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:49:29,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:49:29,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:49:29,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:49:29,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:49:29,508 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:49:29,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:49:29,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:49:29,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:49:29,566 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:49:29,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:49:29,567 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:49:29,567 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:49:29,567 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:49:29,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:49:29,568 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:49:29,569 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:49:29,569 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:49:29,570 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:49:29,570 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:49:29,570 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:49:29,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:49:29,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:49:29,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:49:29,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:49:29,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:49:29,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:49:29,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:49:29,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:49:29,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:49:29,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:49:29,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:49:29,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:49:29,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:49:29,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:49:29,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:49:29,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:29,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:49:29,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:49:29,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:49:29,578 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:49:29,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:49:29,578 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:49:29,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:49:29,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:49:29,579 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c [2021-10-24 09:49:29,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:49:29,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:49:29,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:49:29,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:49:29,923 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:49:29,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-24 09:49:30,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/e1db56c86/99ee93f485754237ba7c6db4bbe9824d/FLAG71f15eecc [2021-10-24 09:49:30,551 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:49:30,552 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-24 09:49:30,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/e1db56c86/99ee93f485754237ba7c6db4bbe9824d/FLAG71f15eecc [2021-10-24 09:49:30,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/e1db56c86/99ee93f485754237ba7c6db4bbe9824d [2021-10-24 09:49:30,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:49:30,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:49:30,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:30,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:49:30,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:49:30,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:30" (1/1) ... [2021-10-24 09:49:30,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4e91b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:30, skipping insertion in model container [2021-10-24 09:49:30,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:30" (1/1) ... [2021-10-24 09:49:30,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:49:30,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:49:31,155 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-24 09:49:31,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:31,168 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:49:31,189 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-24 09:49:31,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:31,205 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:49:31,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31 WrapperNode [2021-10-24 09:49:31,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:31,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:31,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:49:31,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:49:31,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:31,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:49:31,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:49:31,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:49:31,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:49:31,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:49:31,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:49:31,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:49:31,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (1/1) ... [2021-10-24 09:49:31,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:31,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:31,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:49:31,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:49:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:49:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:49:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:49:31,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:49:31,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:49:31,722 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-24 09:49:31,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:31 BoogieIcfgContainer [2021-10-24 09:49:31,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:49:31,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:49:31,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:49:31,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:49:31,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:49:30" (1/3) ... [2021-10-24 09:49:31,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5325ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:31, skipping insertion in model container [2021-10-24 09:49:31,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:31" (2/3) ... [2021-10-24 09:49:31,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5325ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:31, skipping insertion in model container [2021-10-24 09:49:31,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:31" (3/3) ... [2021-10-24 09:49:31,736 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-10-24 09:49:31,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:49:31,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:49:31,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:49:31,805 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:49:31,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:49:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 09:49:31,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:31,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 09:49:31,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:31,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:31,834 INFO L82 PathProgramCache]: Analyzing trace with hash 67911, now seen corresponding path program 1 times [2021-10-24 09:49:31,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:31,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413174861] [2021-10-24 09:49:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:31,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:49:31,977 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:49:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:49:32,073 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:49:32,078 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:49:32,079 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:32,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:49:32,091 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:49:32,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:49:32 BoogieIcfgContainer [2021-10-24 09:49:32,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:49:32,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:49:32,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:49:32,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:49:32,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:31" (3/4) ... [2021-10-24 09:49:32,127 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:49:32,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:49:32,133 INFO L168 Benchmark]: Toolchain (without parser) took 1219.54 ms. Allocated memory is still 92.3 MB. Free memory was 57.8 MB in the beginning and 39.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:32,135 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:32,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.82 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 67.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:32,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.05 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 65.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:32,140 INFO L168 Benchmark]: Boogie Preprocessor took 53.74 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 64.7 MB in the end (delta: 965.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:32,141 INFO L168 Benchmark]: RCFGBuilder took 410.58 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 52.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:32,147 INFO L168 Benchmark]: TraceAbstraction took 385.54 ms. Allocated memory is still 92.3 MB. Free memory was 52.5 MB in the beginning and 39.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:32,150 INFO L168 Benchmark]: Witness Printer took 5.31 ms. Allocated memory is still 92.3 MB. Free memory was 39.6 MB in the beginning and 39.2 MB in the end (delta: 317.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:32,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory was 61.5 MB in the beginning and 61.5 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.82 ms. Allocated memory is still 92.3 MB. Free memory was 57.5 MB in the beginning and 67.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.05 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 65.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.74 ms. Allocated memory is still 92.3 MB. Free memory was 65.7 MB in the beginning and 64.7 MB in the end (delta: 965.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 410.58 ms. Allocated memory is still 92.3 MB. Free memory was 64.7 MB in the beginning and 52.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 385.54 ms. Allocated memory is still 92.3 MB. Free memory was 52.5 MB in the beginning and 39.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.31 ms. Allocated memory is still 92.3 MB. Free memory was 39.6 MB in the beginning and 39.2 MB in the end (delta: 317.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. 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) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 292.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.0ms SsaConstructionTime, 50.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-10-24 09:49:32,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:49:34,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:49:34,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:49:34,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:49:34,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:49:34,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:49:35,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:49:35,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:49:35,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:49:35,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:49:35,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:49:35,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:49:35,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:49:35,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:49:35,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:49:35,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:49:35,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:49:35,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:49:35,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:49:35,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:49:35,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:49:35,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:49:35,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:49:35,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:49:35,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:49:35,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:49:35,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:49:35,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:49:35,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:49:35,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:49:35,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:49:35,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:49:35,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:49:35,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:49:35,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:49:35,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:49:35,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:49:35,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:49:35,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:49:35,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:49:35,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:49:35,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:49:35,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:49:35,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:49:35,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:49:35,168 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:49:35,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:49:35,168 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:49:35,169 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:49:35,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:49:35,169 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:49:35,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:49:35,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:49:35,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:49:35,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:49:35,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:49:35,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:49:35,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:49:35,174 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:49:35,174 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:49:35,174 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:49:35,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:49:35,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:49:35,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:49:35,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:49:35,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:49:35,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:49:35,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:49:35,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:35,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:49:35,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:49:35,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:49:35,178 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:49:35,178 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:49:35,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:49:35,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:49:35,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:49:35,180 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_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b76e3e70ed108f92e769876308a925ebb8bab0a1a08c7e1126b22b4345d7700c [2021-10-24 09:49:35,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:49:35,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:49:35,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:49:35,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:49:35,713 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:49:35,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-24 09:49:35,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/d71081ebe/f6d01a3235a142b3a1cbb52649ad4cde/FLAG348d6b79c [2021-10-24 09:49:36,370 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:49:36,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-10-24 09:49:36,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/d71081ebe/f6d01a3235a142b3a1cbb52649ad4cde/FLAG348d6b79c [2021-10-24 09:49:36,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/data/d71081ebe/f6d01a3235a142b3a1cbb52649ad4cde [2021-10-24 09:49:36,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:49:36,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:49:36,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:36,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:49:36,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:49:36,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:36" (1/1) ... [2021-10-24 09:49:36,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c574288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:36, skipping insertion in model container [2021-10-24 09:49:36,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:36" (1/1) ... [2021-10-24 09:49:36,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:49:36,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:49:36,960 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-24 09:49:36,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:36,979 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:49:37,015 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1245,1258] [2021-10-24 09:49:37,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:37,042 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:49:37,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37 WrapperNode [2021-10-24 09:49:37,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:37,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:37,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:49:37,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:49:37,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:37,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:49:37,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:49:37,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:49:37,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:49:37,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:49:37,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:49:37,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:49:37,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:37,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:49:37,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:49:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:49:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:49:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:49:37,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:49:48,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:49:48,937 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-24 09:49:48,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:48 BoogieIcfgContainer [2021-10-24 09:49:48,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:49:48,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:49:48,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:49:48,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:49:48,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:49:36" (1/3) ... [2021-10-24 09:49:48,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf36e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:48, skipping insertion in model container [2021-10-24 09:49:48,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (2/3) ... [2021-10-24 09:49:48,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16cf36e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:48, skipping insertion in model container [2021-10-24 09:49:48,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:48" (3/3) ... [2021-10-24 09:49:48,950 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-10-24 09:49:48,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:49:48,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:49:49,019 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:49:49,028 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:49:49,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:49:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:49,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:49:49,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:49,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:49,068 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:49,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787092, now seen corresponding path program 1 times [2021-10-24 09:49:49,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:49:49,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519790213] [2021-10-24 09:49:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:49,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:49:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:49:49,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:49:49,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:49:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:51,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:49:51,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:49:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:52,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:49:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:52,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:49:52,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519790213] [2021-10-24 09:49:52,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519790213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:52,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:52,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:49:52,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875589601] [2021-10-24 09:49:52,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:49:52,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:49:52,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:49:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:49:52,284 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:52,300 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-24 09:49:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:49:52,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 09:49:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:52,311 INFO L225 Difference]: With dead ends: 27 [2021-10-24 09:49:52,312 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 09:49:52,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:49:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 09:49:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 09:49:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-24 09:49:52,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 10 [2021-10-24 09:49:52,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:52,350 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-24 09:49:52,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:49:52,351 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-24 09:49:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:49:52,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:52,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:52,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:49:52,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:49:52,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:52,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2077133718, now seen corresponding path program 1 times [2021-10-24 09:49:52,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:49:52,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795600769] [2021-10-24 09:49:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:52,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:49:52,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:49:52,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:49:52,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:52:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:52:30,192 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:52:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:52:39,352 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 09:52:39,352 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:52:39,355 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:52:39,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-24 09:52:39,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:52:39,564 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:52:39,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:52:39 BoogieIcfgContainer [2021-10-24 09:52:39,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:52:39,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:52:39,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:52:39,596 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:52:39,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:48" (3/4) ... [2021-10-24 09:52:39,599 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:52:39,684 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:52:39,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:52:39,691 INFO L168 Benchmark]: Toolchain (without parser) took 182979.00 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 36.6 MB in the beginning and 45.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:39,692 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:52:39,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.51 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 36.4 MB in the beginning and 65.0 MB in the end (delta: -28.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:39,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.95 ms. Allocated memory is still 81.8 MB. Free memory was 65.0 MB in the beginning and 63.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:39,704 INFO L168 Benchmark]: Boogie Preprocessor took 56.91 ms. Allocated memory is still 81.8 MB. Free memory was 63.2 MB in the beginning and 62.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:52:39,704 INFO L168 Benchmark]: RCFGBuilder took 11726.21 ms. Allocated memory is still 81.8 MB. Free memory was 61.8 MB in the beginning and 51.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:39,706 INFO L168 Benchmark]: TraceAbstraction took 170651.43 ms. Allocated memory is still 81.8 MB. Free memory was 51.3 MB in the beginning and 47.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:52:39,707 INFO L168 Benchmark]: Witness Printer took 95.29 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 45.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:52:39,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.51 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 36.4 MB in the beginning and 65.0 MB in the end (delta: -28.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.95 ms. Allocated memory is still 81.8 MB. Free memory was 65.0 MB in the beginning and 63.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.91 ms. Allocated memory is still 81.8 MB. Free memory was 63.2 MB in the beginning and 62.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11726.21 ms. Allocated memory is still 81.8 MB. Free memory was 61.8 MB in the beginning and 51.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 170651.43 ms. Allocated memory is still 81.8 MB. Free memory was 51.3 MB in the beginning and 47.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 95.29 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 45.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_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) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 170546.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 27.4ms, AutomataDifference: 50.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.3ms SsaConstructionTime, 160223.2ms SatisfiabilityAnalysisTime, 451.9ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 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! [2021-10-24 09:52:39,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41df58a5-bf88-411e-9924-3c319ab06159/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...