./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.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_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/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_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/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_ec3841fa-86be-4069-8ec8-5ed9cae60214/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 d9c72214a613f4a26e1c80cbce806993eed5c352 ................................................................................................................................................................................................................................................. 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_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/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_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/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_ec3841fa-86be-4069-8ec8-5ed9cae60214/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 d9c72214a613f4a26e1c80cbce806993eed5c352 .................................................................................................................................................................................................................................................................................................. 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 07:53:06,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:53:06,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:53:06,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:53:06,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:53:06,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:53:06,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:53:06,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:53:06,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:53:06,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:53:06,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:53:06,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:53:06,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:53:06,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:53:06,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:53:06,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:53:06,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:53:06,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:53:06,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:53:06,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:53:06,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:53:06,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:53:06,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:53:06,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:53:06,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:53:06,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:53:06,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:53:06,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:53:06,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:53:06,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:53:06,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:53:06,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:53:06,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:53:06,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:53:06,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:53:06,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:53:06,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:53:06,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:53:06,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:53:06,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:53:06,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:53:06,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:53:06,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:53:06,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:53:06,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:53:06,423 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:53:06,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:53:06,424 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:53:06,424 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:53:06,424 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:53:06,425 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:53:06,425 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:53:06,425 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:53:06,426 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:53:06,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:53:06,426 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:53:06,426 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:53:06,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:53:06,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:53:06,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:53:06,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:53:06,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:53:06,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:53:06,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:53:06,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:53:06,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:53:06,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:53:06,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:53:06,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:53:06,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:53:06,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:53:06,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:53:06,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:06,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:53:06,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:53:06,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:53:06,432 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:53:06,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:53:06,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:53:06,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:53:06,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:53:06,433 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_ec3841fa-86be-4069-8ec8-5ed9cae60214/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2021-10-13 07:53:06,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:53:06,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:53:06,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:53:06,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:53:06,694 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:53:06,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-13 07:53:06,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/0a65cd9ba/74c6028b56e44734bd21b4022544f0da/FLAGd20fba03c [2021-10-13 07:53:07,267 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:53:07,268 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-13 07:53:07,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/0a65cd9ba/74c6028b56e44734bd21b4022544f0da/FLAGd20fba03c [2021-10-13 07:53:07,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/0a65cd9ba/74c6028b56e44734bd21b4022544f0da [2021-10-13 07:53:07,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:53:07,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:53:07,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:07,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:53:07,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:53:07,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57076c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07, skipping insertion in model container [2021-10-13 07:53:07,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:53:07,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:53:07,847 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_ec3841fa-86be-4069-8ec8-5ed9cae60214/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-13 07:53:07,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:07,858 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:53:07,876 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_ec3841fa-86be-4069-8ec8-5ed9cae60214/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-13 07:53:07,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:07,889 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:53:07,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07 WrapperNode [2021-10-13 07:53:07,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:07,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:07,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:53:07,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:53:07,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:07,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:53:07,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:53:07,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:53:07,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:53:07,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:53:07,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:53:07,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:53:07,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (1/1) ... [2021-10-13 07:53:07,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:07,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:53:07,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:53:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:53:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:53:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:53:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:53:08,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:53:08,243 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:53:08,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:08 BoogieIcfgContainer [2021-10-13 07:53:08,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:53:08,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:53:08,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:53:08,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:53:08,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:07" (1/3) ... [2021-10-13 07:53:08,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40714a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:08, skipping insertion in model container [2021-10-13 07:53:08,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:07" (2/3) ... [2021-10-13 07:53:08,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40714a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:08, skipping insertion in model container [2021-10-13 07:53:08,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:08" (3/3) ... [2021-10-13 07:53:08,253 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2021-10-13 07:53:08,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:53:08,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:53:08,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:53:08,309 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 07:53:08,309 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:53:08,321 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 07:53:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:53:08,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:08,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:53:08,326 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:08,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:08,332 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-13 07:53:08,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:53:08,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069427883] [2021-10-13 07:53:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:08,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:53:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:53:08,495 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:53:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:53:08,530 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:53:08,532 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:53:08,533 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:08,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:53:08,541 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:53:08,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:08 BoogieIcfgContainer [2021-10-13 07:53:08,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:53:08,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:53:08,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:53:08,566 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:53:08,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:08" (3/4) ... [2021-10-13 07:53:08,570 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:53:08,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:53:08,574 INFO L168 Benchmark]: Toolchain (without parser) took 932.07 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 54.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:08,576 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory was 80.6 MB in the beginning and 80.6 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:08,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.26 ms. Allocated memory is still 107.0 MB. Free memory was 71.1 MB in the beginning and 81.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:08,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.38 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 79.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:08,579 INFO L168 Benchmark]: Boogie Preprocessor took 21.05 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:08,580 INFO L168 Benchmark]: RCFGBuilder took 296.97 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 67.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:08,585 INFO L168 Benchmark]: TraceAbstraction took 313.58 ms. Allocated memory is still 107.0 MB. Free memory was 67.1 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:08,588 INFO L168 Benchmark]: Witness Printer took 4.08 ms. Allocated memory is still 107.0 MB. Free memory was 54.5 MB in the beginning and 54.0 MB in the end (delta: 546.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:08,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory was 80.6 MB in the beginning and 80.6 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.26 ms. Allocated memory is still 107.0 MB. Free memory was 71.1 MB in the beginning and 81.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.38 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 79.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.05 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 296.97 ms. Allocated memory is still 107.0 MB. Free memory was 78.6 MB in the beginning and 67.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 313.58 ms. Allocated memory is still 107.0 MB. Free memory was 67.1 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.08 ms. Allocated memory is still 107.0 MB. Free memory was 54.5 MB in the beginning and 54.0 MB in the end (delta: 546.5 kB). 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 - 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: 238.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.8ms, 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: 5.2ms SsaConstructionTime, 40.1ms 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 07:53:08,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/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 07:53:11,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:53:11,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:53:11,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:53:11,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:53:11,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:53:11,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:53:11,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:53:11,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:53:11,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:53:11,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:53:11,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:53:11,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:53:11,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:53:11,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:53:11,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:53:11,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:53:11,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:53:11,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:53:11,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:53:11,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:53:11,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:53:11,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:53:11,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:53:11,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:53:11,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:53:11,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:53:11,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:53:11,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:53:11,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:53:11,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:53:11,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:53:11,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:53:11,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:53:11,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:53:11,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:53:11,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:53:11,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:53:11,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:53:11,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:53:11,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:53:11,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:53:11,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:53:11,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:53:11,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:53:11,220 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:53:11,220 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:53:11,220 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:53:11,220 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:53:11,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:53:11,221 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:53:11,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:53:11,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:53:11,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:53:11,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:53:11,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:53:11,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:53:11,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:53:11,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:53:11,224 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:53:11,225 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:53:11,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:53:11,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:53:11,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:53:11,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:53:11,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:53:11,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:53:11,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:53:11,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:11,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:53:11,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:53:11,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:53:11,227 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:53:11,228 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:53:11,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:53:11,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:53:11,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:53:11,229 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_ec3841fa-86be-4069-8ec8-5ed9cae60214/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9c72214a613f4a26e1c80cbce806993eed5c352 [2021-10-13 07:53:11,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:53:11,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:53:11,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:53:11,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:53:11,702 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:53:11,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-13 07:53:11,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/ef6c1511b/010ca6e945124b17b563266e6ff3bfcd/FLAGac3b08c2a [2021-10-13 07:53:12,244 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:53:12,244 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-13 07:53:12,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/ef6c1511b/010ca6e945124b17b563266e6ff3bfcd/FLAGac3b08c2a [2021-10-13 07:53:12,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/data/ef6c1511b/010ca6e945124b17b563266e6ff3bfcd [2021-10-13 07:53:12,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:53:12,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:53:12,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:12,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:53:12,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:53:12,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61066485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12, skipping insertion in model container [2021-10-13 07:53:12,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:53:12,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:53:12,835 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_ec3841fa-86be-4069-8ec8-5ed9cae60214/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-13 07:53:12,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:12,849 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:53:12,868 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_ec3841fa-86be-4069-8ec8-5ed9cae60214/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-13 07:53:12,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:53:12,883 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:53:12,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12 WrapperNode [2021-10-13 07:53:12,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:53:12,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:12,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:53:12,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:53:12,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:53:12,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:53:12,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:53:12,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:53:12,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:53:12,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:53:12,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:53:12,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:53:12,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (1/1) ... [2021-10-13 07:53:12,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:53:12,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:53:12,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:53:12,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:53:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:53:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:53:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:53:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:53:19,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:53:19,978 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:53:19,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:19 BoogieIcfgContainer [2021-10-13 07:53:19,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:53:19,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:53:19,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:53:19,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:53:19,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:12" (1/3) ... [2021-10-13 07:53:19,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bee44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:19, skipping insertion in model container [2021-10-13 07:53:19,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12" (2/3) ... [2021-10-13 07:53:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bee44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:19, skipping insertion in model container [2021-10-13 07:53:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:19" (3/3) ... [2021-10-13 07:53:19,990 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2021-10-13 07:53:19,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:53:19,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:53:20,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:53:20,053 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 07:53:20,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:53:20,067 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 07:53:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:53:20,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:20,073 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:20,073 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:20,079 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-13 07:53:20,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:20,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311567575] [2021-10-13 07:53:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:20,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:20,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:20,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:20,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:53:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:53:21,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:53:21,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:53:21,361 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 07:53:21,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:53:21,432 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 07:53:21,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:53:21,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311567575] [2021-10-13 07:53:21,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311567575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:53:21,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:53:21,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:53:21,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312950864] [2021-10-13 07:53:21,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:53:21,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:53:21,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:53:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:53:21,458 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 07:53:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:53:21,471 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-13 07:53:21,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:53:21,473 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 07:53:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:53:21,481 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:53:21,481 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:53:21,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:53:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:53:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:53:21,520 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 07:53:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 07:53:21,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-13 07:53:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:53:21,522 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 07:53:21,522 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 07:53:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 07:53:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:53:21,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:53:21,523 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:53:21,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:21,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:53:21,739 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:53:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:53:21,739 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-13 07:53:21,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:53:21,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673832721] [2021-10-13 07:53:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:53:21,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:53:21,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:53:21,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:53:21,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:53:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:53:38,708 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:53:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:53:40,596 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:53:40,596 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:53:40,598 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:53:40,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:53:40,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:53:40,805 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:53:40,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:40 BoogieIcfgContainer [2021-10-13 07:53:40,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:53:40,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:53:40,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:53:40,829 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:53:40,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:19" (3/4) ... [2021-10-13 07:53:40,847 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:53:40,881 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:53:40,881 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:53:40,883 INFO L168 Benchmark]: Toolchain (without parser) took 28263.48 ms. Allocated memory is still 90.2 MB. Free memory was 55.1 MB in the beginning and 65.0 MB in the end (delta: -9.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:40,884 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 71.3 MB in the beginning and 71.3 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:40,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.46 ms. Allocated memory is still 90.2 MB. Free memory was 54.9 MB in the beginning and 70.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:40,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 90.2 MB. Free memory was 70.4 MB in the beginning and 68.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:40,886 INFO L168 Benchmark]: Boogie Preprocessor took 27.12 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 67.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:40,886 INFO L168 Benchmark]: RCFGBuilder took 7031.46 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 57.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:53:40,887 INFO L168 Benchmark]: TraceAbstraction took 20845.02 ms. Allocated memory is still 90.2 MB. Free memory was 57.4 MB in the beginning and 67.1 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:40,887 INFO L168 Benchmark]: Witness Printer took 52.98 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 65.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:53:40,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 71.3 MB in the beginning and 71.3 MB in the end (delta: 78.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.46 ms. Allocated memory is still 90.2 MB. Free memory was 54.9 MB in the beginning and 70.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 90.2 MB. Free memory was 70.4 MB in the beginning and 68.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.12 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 67.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7031.46 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 57.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20845.02 ms. Allocated memory is still 90.2 MB. Free memory was 57.4 MB in the beginning and 67.1 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 52.98 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 65.4 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: 20758.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 42.7ms, 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, 0.0ms 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: 23.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 17988.4ms SatisfiabilityAnalysisTime, 214.4ms 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 07:53:40,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec3841fa-86be-4069-8ec8-5ed9cae60214/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...