./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8 --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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ................................................................................................................................................................................................................................................. 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_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8 --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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab .................................................................................................................................................................................................................................................................................................. 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-4e77c04 [2021-10-13 06:47:26,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:47:26,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:47:26,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:47:26,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:47:26,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:47:26,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:47:26,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:47:26,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:47:26,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:47:26,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:47:26,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:47:26,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:47:26,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:47:26,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:47:26,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:47:26,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:47:26,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:47:26,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:47:26,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:47:26,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:47:26,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:47:26,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:47:26,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:47:26,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:47:26,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:47:26,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:47:26,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:47:26,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:47:26,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:47:26,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:47:26,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:47:26,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:47:26,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:47:26,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:47:26,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:47:26,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:47:26,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:47:26,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:47:26,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:47:26,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:47:26,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:47:26,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:47:26,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:47:26,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:47:26,576 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:47:26,576 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:47:26,576 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:47:26,577 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:47:26,577 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:47:26,584 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:47:26,585 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:47:26,586 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:47:26,586 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:47:26,586 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:47:26,587 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:47:26,587 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:47:26,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:47:26,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:47:26,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:47:26,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:47:26,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:47:26,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:47:26,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:47:26,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:47:26,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:47:26,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:47:26,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:47:26,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:47:26,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:47:26,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:47:26,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:47:26,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:47:26,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:47:26,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:47:26,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:47:26,595 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:47:26,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:47:26,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:47:26,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:47:26,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:47:26,596 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_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2021-10-13 06:47:26,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:47:26,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:47:26,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:47:26,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:47:26,982 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:47:26,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-13 06:47:27,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/0816fbf67/d1060e82bdbb4bfc850d02c29260d312/FLAG0d6da4abf [2021-10-13 06:47:27,722 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:47:27,723 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-13 06:47:27,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/0816fbf67/d1060e82bdbb4bfc850d02c29260d312/FLAG0d6da4abf [2021-10-13 06:47:28,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/0816fbf67/d1060e82bdbb4bfc850d02c29260d312 [2021-10-13 06:47:28,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:47:28,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:47:28,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:47:28,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:47:28,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:47:28,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366204e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28, skipping insertion in model container [2021-10-13 06:47:28,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:47:28,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:47:28,344 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_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-13 06:47:28,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:47:28,358 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:47:28,381 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_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-13 06:47:28,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:47:28,398 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:47:28,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28 WrapperNode [2021-10-13 06:47:28,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:47:28,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:47:28,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:47:28,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:47:28,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:47:28,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:47:28,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:47:28,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:47:28,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:47:28,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:47:28,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:47:28,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:47:28,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (1/1) ... [2021-10-13 06:47:28,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:47:28,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:47:28,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:47:28,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:47:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:47:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:47:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:47:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:47:28,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:47:28,954 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:47:28,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:28 BoogieIcfgContainer [2021-10-13 06:47:28,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:47:28,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:47:28,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:47:28,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:47:28,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:47:28" (1/3) ... [2021-10-13 06:47:28,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecfa1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:28, skipping insertion in model container [2021-10-13 06:47:28,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:28" (2/3) ... [2021-10-13 06:47:28,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecfa1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:28, skipping insertion in model container [2021-10-13 06:47:28,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:28" (3/3) ... [2021-10-13 06:47:28,982 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-10-13 06:47:28,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:47:28,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:47:29,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:47:29,085 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, mConcurrency=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 [2021-10-13 06:47:29,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:47:29,104 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) [2021-10-13 06:47:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 06:47:29,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:47:29,111 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 06:47:29,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:47:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:47:29,121 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-13 06:47:29,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:47:29,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120286037] [2021-10-13 06:47:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:47:29,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:47:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:47:29,331 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:47:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:47:29,403 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:47:29,411 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:47:29,413 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:47:29,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:47:29,425 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:47:29,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:47:29 BoogieIcfgContainer [2021-10-13 06:47:29,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:47:29,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:47:29,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:47:29,456 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:47:29,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:28" (3/4) ... [2021-10-13 06:47:29,461 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 06:47:29,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:47:29,463 INFO L168 Benchmark]: Toolchain (without parser) took 1389.64 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 80.6 MB in the end (delta: -25.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:29,465 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:29,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.63 ms. Allocated memory is still 88.1 MB. Free memory was 55.4 MB in the beginning and 64.1 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:29,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 62.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:29,469 INFO L168 Benchmark]: Boogie Preprocessor took 24.36 ms. Allocated memory is still 88.1 MB. Free memory was 62.4 MB in the beginning and 61.5 MB in the end (delta: 953.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:29,470 INFO L168 Benchmark]: RCFGBuilder took 479.65 ms. Allocated memory is still 88.1 MB. Free memory was 61.5 MB in the beginning and 50.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:29,475 INFO L168 Benchmark]: TraceAbstraction took 493.20 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 81.1 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:29,477 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 80.6 MB in the end (delta: 494.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:29,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.63 ms. Allocated memory is still 88.1 MB. Free memory was 55.4 MB in the beginning and 64.1 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 62.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.36 ms. Allocated memory is still 88.1 MB. Free memory was 62.4 MB in the beginning and 61.5 MB in the end (delta: 953.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 479.65 ms. Allocated memory is still 88.1 MB. Free memory was 61.5 MB in the beginning and 50.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 493.20 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 81.1 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.18 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 80.6 MB in the end (delta: 494.3 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); [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: 353.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, 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: 22.3ms SsaConstructionTime, 78.7ms 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 [2021-10-13 06:47:29,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 06:47:32,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:47:32,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:47:32,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:47:32,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:47:32,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:47:32,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:47:32,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:47:32,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:47:32,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:47:32,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:47:32,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:47:32,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:47:32,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:47:32,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:47:32,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:47:32,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:47:32,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:47:32,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:47:32,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:47:32,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:47:32,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:47:32,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:47:32,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:47:32,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:47:32,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:47:32,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:47:32,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:47:32,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:47:32,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:47:32,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:47:32,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:47:32,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:47:32,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:47:32,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:47:32,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:47:32,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:47:32,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:47:32,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:47:32,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:47:32,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:47:32,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:47:32,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:47:32,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:47:32,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:47:32,355 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:47:32,355 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:47:32,355 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:47:32,355 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:47:32,355 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:47:32,356 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:47:32,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:47:32,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:47:32,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:47:32,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:47:32,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:47:32,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:47:32,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:47:32,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:47:32,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:47:32,359 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:47:32,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:47:32,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:47:32,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:47:32,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:47:32,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:47:32,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:47:32,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:47:32,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:47:32,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:47:32,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:47:32,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:47:32,362 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:47:32,362 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:47:32,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:47:32,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:47:32,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:47:32,363 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_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2021-10-13 06:47:32,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:47:32,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:47:32,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:47:32,822 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:47:32,828 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:47:32,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-13 06:47:32,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/8bb5c52c0/a3298232b65e4f799337c42b9739260c/FLAG61ea9b596 [2021-10-13 06:47:33,549 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:47:33,550 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-13 06:47:33,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/8bb5c52c0/a3298232b65e4f799337c42b9739260c/FLAG61ea9b596 [2021-10-13 06:47:33,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/data/8bb5c52c0/a3298232b65e4f799337c42b9739260c [2021-10-13 06:47:33,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:47:33,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:47:33,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:47:33,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:47:33,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:47:33,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:33" (1/1) ... [2021-10-13 06:47:33,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5cf2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:33, skipping insertion in model container [2021-10-13 06:47:33,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:47:33" (1/1) ... [2021-10-13 06:47:33,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:47:33,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:47:34,157 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_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-13 06:47:34,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:47:34,176 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:47:34,219 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_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-13 06:47:34,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:47:34,249 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:47:34,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34 WrapperNode [2021-10-13 06:47:34,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:47:34,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:47:34,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:47:34,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:47:34,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:47:34,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:47:34,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:47:34,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:47:34,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:47:34,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:47:34,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:47:34,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:47:34,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (1/1) ... [2021-10-13 06:47:34,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:47:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:47:34,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:47:34,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:47:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:47:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:47:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:47:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:47:41,461 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:47:41,461 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:47:41,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:41 BoogieIcfgContainer [2021-10-13 06:47:41,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:47:41,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:47:41,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:47:41,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:47:41,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:47:33" (1/3) ... [2021-10-13 06:47:41,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e11bdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:41, skipping insertion in model container [2021-10-13 06:47:41,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:47:34" (2/3) ... [2021-10-13 06:47:41,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e11bdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:47:41, skipping insertion in model container [2021-10-13 06:47:41,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:41" (3/3) ... [2021-10-13 06:47:41,473 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-10-13 06:47:41,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:47:41,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:47:41,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:47:41,531 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, mConcurrency=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 [2021-10-13 06:47:41,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:47:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-10-13 06:47:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:47:41,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:47:41,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:47:41,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:47:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:47:41,556 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-13 06:47:41,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:47:41,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904794596] [2021-10-13 06:47:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:47:41,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:47:41,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:47:41,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:47:41,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:47:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:47:43,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:47:43,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:47:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:47:43,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:47:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:47:43,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:47:43,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904794596] [2021-10-13 06:47:43,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904794596] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:47:43,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:47:43,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:47:43,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864258838] [2021-10-13 06:47:43,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:47:43,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:47:43,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:47:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:47:43,323 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 06:47:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:47:43,337 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-13 06:47:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:47:43,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 06:47:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:47:43,348 INFO L225 Difference]: With dead ends: 23 [2021-10-13 06:47:43,348 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 06:47:43,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:47:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 06:47:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 06:47:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2021-10-13 06:47:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 06:47:43,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-13 06:47:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:47:43,376 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 06:47:43,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 06:47:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 06:47:43,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:47:43,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:47:43,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:47:43,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 06:47:43,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:47:43,591 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:47:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:47:43,592 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-13 06:47:43,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:47:43,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944298690] [2021-10-13 06:47:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:47:43,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:47:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:47:43,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:47:43,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:47:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:47:47,245 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:47:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:47:52,970 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 06:47:52,971 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:47:52,973 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:47:53,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:47:53,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:47:53,183 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:47:53,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:47:53 BoogieIcfgContainer [2021-10-13 06:47:53,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:47:53,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:47:53,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:47:53,212 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:47:53,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:47:41" (3/4) ... [2021-10-13 06:47:53,215 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 06:47:53,265 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:47:53,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:47:53,268 INFO L168 Benchmark]: Toolchain (without parser) took 19347.39 ms. Allocated memory is still 69.2 MB. Free memory was 48.1 MB in the beginning and 36.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:53,268 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:53,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.80 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 51.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:53,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.32 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:53,270 INFO L168 Benchmark]: Boogie Preprocessor took 31.68 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 48.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:53,271 INFO L168 Benchmark]: RCFGBuilder took 7130.85 ms. Allocated memory is still 69.2 MB. Free memory was 48.1 MB in the beginning and 39.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:53,271 INFO L168 Benchmark]: TraceAbstraction took 11745.40 ms. Allocated memory is still 69.2 MB. Free memory was 38.5 MB in the beginning and 38.3 MB in the end (delta: 177.7 kB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-13 06:47:53,272 INFO L168 Benchmark]: Witness Printer took 53.85 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 36.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:47:53,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.80 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 51.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.32 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.68 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 48.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7130.85 ms. Allocated memory is still 69.2 MB. Free memory was 48.1 MB in the beginning and 39.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11745.40 ms. Allocated memory is still 69.2 MB. Free memory was 38.5 MB in the beginning and 38.3 MB in the end (delta: 177.7 kB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 53.85 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 36.6 MB in the end (delta: 1.7 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); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11658.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.9ms, AutomataDifference: 43.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 12.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.9ms SsaConstructionTime, 5015.5ms SatisfiabilityAnalysisTime, 248.6ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 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! [2021-10-13 06:47:53,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b35881-9adc-4f3a-a46d-0ddb65627ef1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...