./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/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_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/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_0478a1da-168d-4f75-b806-ce3580c47672/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 550ce92df70a0cab5dce210b051b3f70343272fc738726df8415162e375fb1d9 ....................................................................................................................................................................................................................................................... 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_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/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_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/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_0478a1da-168d-4f75-b806-ce3580c47672/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 550ce92df70a0cab5dce210b051b3f70343272fc738726df8415162e375fb1d9 ........................................................................................................................................................................................................................................................................................................ 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 11:05:13,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:05:13,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:05:13,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:05:13,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:05:13,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:05:13,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:05:13,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:05:13,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:05:13,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:05:13,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:05:13,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:05:13,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:05:13,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:05:13,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:05:13,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:05:13,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:05:13,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:05:13,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:05:13,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:05:13,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:05:13,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:05:13,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:05:13,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:05:13,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:05:13,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:05:13,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:05:13,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:05:13,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:05:13,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:05:13,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:05:13,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:05:13,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:05:13,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:05:13,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:05:13,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:05:13,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:05:13,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:05:13,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:05:13,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:05:13,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:05:13,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:05:13,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:05:13,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:05:13,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:05:13,491 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:05:13,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:05:13,492 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:05:13,492 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:05:13,492 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:05:13,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:05:13,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:05:13,500 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:05:13,501 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:05:13,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:05:13,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:05:13,501 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:05:13,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:05:13,502 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:05:13,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:05:13,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:05:13,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:05:13,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:05:13,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:05:13,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:05:13,504 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:05:13,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:05:13,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:05:13,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:05:13,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:05:13,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:05:13,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:05:13,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:05:13,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:05:13,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:05:13,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:05:13,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:05:13,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:05:13,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:05:13,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:05:13,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:05:13,508 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_0478a1da-168d-4f75-b806-ce3580c47672/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 550ce92df70a0cab5dce210b051b3f70343272fc738726df8415162e375fb1d9 [2021-10-24 11:05:13,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:05:13,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:05:13,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:05:13,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:05:13,908 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:05:13,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-24 11:05:13,976 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/3b554a905/a9af8d61d63f4ed6aa4e2505f4b70f73/FLAG98ac3c5fe [2021-10-24 11:05:14,586 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:05:14,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-24 11:05:14,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/3b554a905/a9af8d61d63f4ed6aa4e2505f4b70f73/FLAG98ac3c5fe [2021-10-24 11:05:14,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/3b554a905/a9af8d61d63f4ed6aa4e2505f4b70f73 [2021-10-24 11:05:14,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:05:14,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:05:14,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:05:14,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:05:14,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:05:14,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:05:14" (1/1) ... [2021-10-24 11:05:14,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418dd53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:14, skipping insertion in model container [2021-10-24 11:05:14,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:05:14" (1/1) ... [2021-10-24 11:05:14,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:05:14,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:05:15,215 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_0478a1da-168d-4f75-b806-ce3580c47672/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-24 11:05:15,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:05:15,240 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:05:15,283 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_0478a1da-168d-4f75-b806-ce3580c47672/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-24 11:05:15,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:05:15,304 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:05:15,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15 WrapperNode [2021-10-24 11:05:15,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:05:15,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:05:15,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:05:15,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:05:15,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:05:15,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:05:15,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:05:15,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:05:15,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:05:15,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:05:15,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:05:15,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:05:15,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (1/1) ... [2021-10-24 11:05:15,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:05:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:05:15,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:05:15,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:05:15,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:05:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:05:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:05:15,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:05:15,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:05:15,927 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 11:05:15,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:05:15 BoogieIcfgContainer [2021-10-24 11:05:15,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:05:15,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:05:15,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:05:15,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:05:15,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:05:14" (1/3) ... [2021-10-24 11:05:15,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b4e36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:05:15, skipping insertion in model container [2021-10-24 11:05:15,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:15" (2/3) ... [2021-10-24 11:05:15,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b4e36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:05:15, skipping insertion in model container [2021-10-24 11:05:15,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:05:15" (3/3) ... [2021-10-24 11:05:15,939 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-10-24 11:05:15,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:05:15,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:05:16,038 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:05:16,052 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 11:05:16,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:05:16,067 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 11:05:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 11:05:16,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:05:16,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 11:05:16,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:05:16,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:05:16,085 INFO L82 PathProgramCache]: Analyzing trace with hash 73805, now seen corresponding path program 1 times [2021-10-24 11:05:16,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:05:16,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389417216] [2021-10-24 11:05:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:05:16,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:05:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:05:16,243 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:05:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:05:16,300 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 11:05:16,302 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:05:16,303 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:05:16,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:05:16,313 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:05:16,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:05:16 BoogieIcfgContainer [2021-10-24 11:05:16,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:05:16,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:05:16,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:05:16,333 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:05:16,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:05:15" (3/4) ... [2021-10-24 11:05:16,337 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 11:05:16,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:05:16,339 INFO L168 Benchmark]: Toolchain (without parser) took 1421.99 ms. Allocated memory is still 115.3 MB. Free memory was 75.4 MB in the beginning and 60.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:05:16,340 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:05:16,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.00 ms. Allocated memory is still 115.3 MB. Free memory was 75.2 MB in the beginning and 89.9 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:05:16,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 87.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:05:16,342 INFO L168 Benchmark]: Boogie Preprocessor took 58.90 ms. Allocated memory is still 115.3 MB. Free memory was 87.8 MB in the beginning and 86.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:05:16,343 INFO L168 Benchmark]: RCFGBuilder took 506.86 ms. Allocated memory is still 115.3 MB. Free memory was 86.6 MB in the beginning and 74.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:05:16,344 INFO L168 Benchmark]: TraceAbstraction took 399.66 ms. Allocated memory is still 115.3 MB. Free memory was 74.0 MB in the beginning and 61.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:05:16,344 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 115.3 MB. Free memory was 61.0 MB in the beginning and 60.5 MB in the end (delta: 489.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:05:16,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 115.3 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.00 ms. Allocated memory is still 115.3 MB. Free memory was 75.2 MB in the beginning and 89.9 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 87.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.90 ms. Allocated memory is still 115.3 MB. Free memory was 87.8 MB in the beginning and 86.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 506.86 ms. Allocated memory is still 115.3 MB. Free memory was 86.6 MB in the beginning and 74.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 399.66 ms. Allocated memory is still 115.3 MB. Free memory was 74.0 MB in the beginning and 61.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.86 ms. Allocated memory is still 115.3 MB. Free memory was 61.0 MB in the beginning and 60.5 MB in the end (delta: 489.1 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) [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) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 275.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.0ms, 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: 13.2ms SsaConstructionTime, 58.0ms 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 11:05:16,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/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 11:05:19,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:05:19,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:05:19,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:05:19,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:05:19,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:05:19,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:05:19,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:05:19,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:05:19,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:05:19,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:05:19,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:05:19,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:05:19,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:05:19,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:05:19,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:05:19,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:05:19,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:05:19,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:05:19,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:05:19,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:05:19,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:05:19,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:05:19,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:05:19,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:05:19,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:05:19,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:05:19,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:05:19,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:05:19,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:05:19,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:05:19,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:05:19,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:05:19,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:05:19,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:05:19,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:05:19,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:05:19,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:05:19,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:05:19,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:05:19,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:05:19,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 11:05:19,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:05:19,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:05:19,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:05:19,256 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:05:19,256 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:05:19,256 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:05:19,257 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:05:19,257 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:05:19,257 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:05:19,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:05:19,260 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:05:19,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:05:19,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:05:19,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:05:19,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:05:19,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:05:19,262 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:05:19,262 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:05:19,262 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:05:19,263 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:05:19,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:05:19,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:05:19,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:05:19,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:05:19,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:05:19,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:05:19,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:05:19,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:05:19,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:05:19,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:05:19,266 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:05:19,266 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:05:19,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:05:19,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:05:19,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:05:19,267 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_0478a1da-168d-4f75-b806-ce3580c47672/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 550ce92df70a0cab5dce210b051b3f70343272fc738726df8415162e375fb1d9 [2021-10-24 11:05:19,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:05:19,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:05:19,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:05:19,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:05:19,759 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:05:19,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-24 11:05:19,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/0f41a0ab3/6ca2960a75fb476f8290f791fede3daf/FLAGba40c48b3 [2021-10-24 11:05:20,442 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:05:20,443 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/sv-benchmarks/c/floats-cdfpl/newton_3_7.i [2021-10-24 11:05:20,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/0f41a0ab3/6ca2960a75fb476f8290f791fede3daf/FLAGba40c48b3 [2021-10-24 11:05:20,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/data/0f41a0ab3/6ca2960a75fb476f8290f791fede3daf [2021-10-24 11:05:20,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:05:20,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:05:20,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:05:20,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:05:20,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:05:20,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:05:20" (1/1) ... [2021-10-24 11:05:20,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ee86b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:20, skipping insertion in model container [2021-10-24 11:05:20,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:05:20" (1/1) ... [2021-10-24 11:05:20,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:05:20,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:05:21,134 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_0478a1da-168d-4f75-b806-ce3580c47672/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-24 11:05:21,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:05:21,173 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:05:21,238 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_0478a1da-168d-4f75-b806-ce3580c47672/sv-benchmarks/c/floats-cdfpl/newton_3_7.i[1266,1279] [2021-10-24 11:05:21,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:05:21,276 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:05:21,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21 WrapperNode [2021-10-24 11:05:21,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:05:21,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:05:21,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:05:21,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:05:21,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:05:21,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:05:21,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:05:21,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:05:21,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:05:21,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:05:21,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:05:21,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:05:21,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (1/1) ... [2021-10-24 11:05:21,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:05:21,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:05:21,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:05:21,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:05:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:05:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:05:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:05:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:05:37,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:05:37,492 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 11:05:37,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:05:37 BoogieIcfgContainer [2021-10-24 11:05:37,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:05:37,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:05:37,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:05:37,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:05:37,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:05:20" (1/3) ... [2021-10-24 11:05:37,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8275b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:05:37, skipping insertion in model container [2021-10-24 11:05:37,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:05:21" (2/3) ... [2021-10-24 11:05:37,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8275b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:05:37, skipping insertion in model container [2021-10-24 11:05:37,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:05:37" (3/3) ... [2021-10-24 11:05:37,505 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_7.i [2021-10-24 11:05:37,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:05:37,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:05:37,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:05:37,575 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 11:05:37,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:05:37,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 11:05:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 11:05:37,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:05:37,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:05:37,604 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:05:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:05:37,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-10-24 11:05:37,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:05:37,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131342778] [2021-10-24 11:05:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:05:37,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:05:37,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:05:37,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:05:37,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:05:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:05:41,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 11:05:41,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:05:42,150 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 11:05:42,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:05:42,309 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 11:05:42,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:05:42,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131342778] [2021-10-24 11:05:42,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131342778] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:05:42,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:05:42,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 11:05:42,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884284207] [2021-10-24 11:05:42,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 11:05:42,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:05:42,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 11:05:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 11:05:42,340 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 11:05:42,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:05:42,357 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-24 11:05:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 11:05:42,359 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-10-24 11:05:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:05:42,369 INFO L225 Difference]: With dead ends: 31 [2021-10-24 11:05:42,369 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 11:05:42,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 11:05:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 11:05:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 11:05:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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 11:05:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-24 11:05:42,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-10-24 11:05:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:05:42,409 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-24 11:05:42,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 11:05:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-24 11:05:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 11:05:42,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:05:42,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:05:42,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:05:42,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:05:42,627 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:05:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:05:42,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-10-24 11:05:42,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:05:42,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008354774] [2021-10-24 11:05:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:05:42,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:05:42,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:05:42,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:05:42,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:06:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:06:16,860 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:09:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:09:59,810 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 11:09:59,810 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:09:59,812 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:09:59,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:10:00,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:10:00,023 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:10:00,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:10:00 BoogieIcfgContainer [2021-10-24 11:10:00,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:10:00,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:10:00,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:10:00,062 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:10:00,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:05:37" (3/4) ... [2021-10-24 11:10:00,065 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 11:10:00,123 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:10:00,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:10:00,139 INFO L168 Benchmark]: Toolchain (without parser) took 279319.05 ms. Allocated memory was 67.1 MB in the beginning and 102.8 MB in the end (delta: 35.7 MB). Free memory was 48.0 MB in the beginning and 67.1 MB in the end (delta: -19.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:00,140 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 48.8 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:10:00,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.35 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 50.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:00,141 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.31 ms. Allocated memory is still 67.1 MB. Free memory was 50.3 MB in the beginning and 48.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:10:00,142 INFO L168 Benchmark]: Boogie Preprocessor took 56.40 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 47.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:00,143 INFO L168 Benchmark]: RCFGBuilder took 16083.05 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 36.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:00,144 INFO L168 Benchmark]: TraceAbstraction took 262564.08 ms. Allocated memory was 67.1 MB in the beginning and 102.8 MB in the end (delta: 35.7 MB). Free memory was 36.3 MB in the beginning and 69.2 MB in the end (delta: -32.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:00,144 INFO L168 Benchmark]: Witness Printer took 65.65 ms. Allocated memory is still 102.8 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:10:00,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 48.8 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.35 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 50.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.31 ms. Allocated memory is still 67.1 MB. Free memory was 50.3 MB in the beginning and 48.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.40 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 47.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 16083.05 ms. Allocated memory is still 67.1 MB. Free memory was 47.0 MB in the beginning and 36.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 262564.08 ms. Allocated memory was 67.1 MB in the beginning and 102.8 MB in the end (delta: 35.7 MB). Free memory was 36.3 MB in the beginning and 69.2 MB in the end (delta: -32.9 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Witness Printer took 65.65 ms. Allocated memory is still 102.8 MB. Free memory was 69.2 MB in the beginning and 67.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. 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) [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) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 262455.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.9ms, AutomataDifference: 50.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 19.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 47.5ms SsaConstructionTime, 38197.0ms SatisfiabilityAnalysisTime, 545.1ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 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 11:10:00,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0478a1da-168d-4f75-b806-ce3580c47672/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...