./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI --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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ................................................................................................................................................................................................................................................. 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_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI --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 9a455407b4fd80f1691ee95c228274faaa3c38f0 ............................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:18,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:18,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:18,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:18,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:18,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:18,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:18,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:18,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:18,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:18,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:18,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:18,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:18,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:18,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:18,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:18,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:18,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:18,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:18,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:18,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:18,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:18,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:18,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:18,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:18,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:18,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:18,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:18,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:18,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:18,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:18,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:18,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:18,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:18,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:18,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:18,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:18,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:18,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:18,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:18,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:18,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:18,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:18,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:18,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:18,460 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:18,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:18,460 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:18,460 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:18,461 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:18,461 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:18,461 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:18,462 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:18,462 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:18,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:18,463 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:18,463 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:18,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:18,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:18,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:18,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:18,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:18,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:18,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:18,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:18,466 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:18,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:18,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:18,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:18,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:18,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:18,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:18,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:18,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:18,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:18,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:18,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:18,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:18,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:18,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:18,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:18,469 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_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2021-10-11 02:29:18,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:18,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:18,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:18,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:18,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:18,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-11 02:29:18,887 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/26e7399c7/6186141f681247668f6da3ff01afcdcc/FLAG5c55667bd [2021-10-11 02:29:19,415 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:19,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-11 02:29:19,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/26e7399c7/6186141f681247668f6da3ff01afcdcc/FLAG5c55667bd [2021-10-11 02:29:19,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/26e7399c7/6186141f681247668f6da3ff01afcdcc [2021-10-11 02:29:19,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:19,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:19,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:19,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:19,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:19,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:19" (1/1) ... [2021-10-11 02:29:19,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d774bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:19, skipping insertion in model container [2021-10-11 02:29:19,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:19" (1/1) ... [2021-10-11 02:29:19,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:19,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:20,064 WARN L226 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_4b8d47ce-4038-4a17-ba02-31bca931739c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-11 02:29:20,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:20,082 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:20,114 WARN L226 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_4b8d47ce-4038-4a17-ba02-31bca931739c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-11 02:29:20,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:20,135 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:20,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20 WrapperNode [2021-10-11 02:29:20,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:20,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:20,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:20,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:20,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:20,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:20,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:20,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:20,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:20,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:20,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:20,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:20,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:20,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:20,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:20,685 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:29:20,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:20 BoogieIcfgContainer [2021-10-11 02:29:20,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:20,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:20,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:20,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:20,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:19" (1/3) ... [2021-10-11 02:29:20,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed586ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:20, skipping insertion in model container [2021-10-11 02:29:20,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (2/3) ... [2021-10-11 02:29:20,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed586ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:20, skipping insertion in model container [2021-10-11 02:29:20,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:20" (3/3) ... [2021-10-11 02:29:20,709 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2021-10-11 02:29:20,723 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:20,737 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:20,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:20,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:20,809 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:20,809 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:20,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:20,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:20,810 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:20,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:20,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2021-10-11 02:29:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:29:20,845 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:20,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:29:20,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:20,865 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-11 02:29:20,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:20,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194669007] [2021-10-11 02:29:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:21,034 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:21,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:21,106 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:21,107 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:21,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:21,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:21 BoogieIcfgContainer [2021-10-11 02:29:21,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:21,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:21,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:21,138 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:21,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:20" (3/4) ... [2021-10-11 02:29:21,151 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:29:21,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:21,157 INFO L168 Benchmark]: Toolchain (without parser) took 1343.48 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 71.1 MB in the beginning and 65.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:21,159 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 57.1 MB in the beginning and 57.1 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:21,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.88 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.8 MB in the beginning and 97.6 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:21,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 121.6 MB. Free memory was 97.6 MB in the beginning and 96.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:21,165 INFO L168 Benchmark]: Boogie Preprocessor took 22.96 ms. Allocated memory is still 121.6 MB. Free memory was 96.1 MB in the beginning and 95.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:21,167 INFO L168 Benchmark]: RCFGBuilder took 488.17 ms. Allocated memory is still 121.6 MB. Free memory was 95.0 MB in the beginning and 78.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:21,168 INFO L168 Benchmark]: TraceAbstraction took 445.18 ms. Allocated memory is still 121.6 MB. Free memory was 77.7 MB in the beginning and 66.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:21,169 INFO L168 Benchmark]: Witness Printer took 17.98 ms. Allocated memory is still 121.6 MB. Free memory was 66.1 MB in the beginning and 65.7 MB in the end (delta: 449.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:21,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory was 57.1 MB in the beginning and 57.1 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.88 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.8 MB in the beginning and 97.6 MB in the end (delta: -26.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 121.6 MB. Free memory was 97.6 MB in the beginning and 96.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.96 ms. Allocated memory is still 121.6 MB. Free memory was 96.1 MB in the beginning and 95.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 488.17 ms. Allocated memory is still 121.6 MB. Free memory was 95.0 MB in the beginning and 78.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 445.18 ms. Allocated memory is still 121.6 MB. Free memory was 77.7 MB in the beginning and 66.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 17.98 ms. Allocated memory is still 121.6 MB. Free memory was 66.1 MB in the beginning and 65.7 MB in the end (delta: 449.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:23,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:23,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:23,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:23,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:23,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:23,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:23,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:23,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:23,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:23,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:23,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:23,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:23,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:23,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:23,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:23,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:23,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:23,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:23,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:23,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:23,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:23,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:23,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:23,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:23,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:23,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:23,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:23,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:23,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:23,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:23,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:23,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:23,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:23,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:23,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:23,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:23,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:23,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:23,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:23,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:23,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:29:23,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:23,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:23,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:23,855 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:23,855 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:23,856 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:23,856 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:23,856 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:23,856 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:23,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:23,859 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:23,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:23,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:23,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:23,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:23,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:23,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:23,861 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:29:23,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:29:23,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:23,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:23,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:23,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:23,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:23,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:29:23,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:23,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:23,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:23,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:23,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:23,864 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:29:23,864 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:29:23,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:23,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:23,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:23,865 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_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a455407b4fd80f1691ee95c228274faaa3c38f0 [2021-10-11 02:29:24,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:24,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:24,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:24,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:24,319 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:24,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-11 02:29:24,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/ba70c213c/38a21b2fd2714f088017ae90676515a6/FLAGf90f522a6 [2021-10-11 02:29:25,008 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:25,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-11 02:29:25,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/ba70c213c/38a21b2fd2714f088017ae90676515a6/FLAGf90f522a6 [2021-10-11 02:29:25,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/data/ba70c213c/38a21b2fd2714f088017ae90676515a6 [2021-10-11 02:29:25,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:25,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:25,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:25,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:25,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:25,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b30b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25, skipping insertion in model container [2021-10-11 02:29:25,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:25,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:25,623 WARN L226 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_4b8d47ce-4038-4a17-ba02-31bca931739c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-11 02:29:25,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:25,652 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:25,700 WARN L226 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_4b8d47ce-4038-4a17-ba02-31bca931739c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-11 02:29:25,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:25,724 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:25,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25 WrapperNode [2021-10-11 02:29:25,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:25,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:25,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:25,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:25,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:25,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:25,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:25,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:25,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:25,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:25,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:25,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:25,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:29:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:25,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:25,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:32,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:32,895 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:29:32,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:32 BoogieIcfgContainer [2021-10-11 02:29:32,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:32,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:32,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:32,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:32,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:25" (1/3) ... [2021-10-11 02:29:32,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe0b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:32, skipping insertion in model container [2021-10-11 02:29:32,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (2/3) ... [2021-10-11 02:29:32,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe0b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:32, skipping insertion in model container [2021-10-11 02:29:32,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:32" (3/3) ... [2021-10-11 02:29:32,927 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2021-10-11 02:29:32,941 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:32,960 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:32,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:32,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:33,001 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:33,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:33,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:33,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:33,003 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:33,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:33,003 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:33,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 02:29:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:29:33,022 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:33,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:33,023 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:33,029 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-11 02:29:33,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:33,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342082626] [2021-10-11 02:29:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:29:34,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:34,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:34,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342082626] [2021-10-11 02:29:34,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:34,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:34,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808139684] [2021-10-11 02:29:34,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:29:34,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:34,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:29:34,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:29:34,542 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2021-10-11 02:29:34,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:34,556 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-11 02:29:34,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:29:34,558 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:29:34,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:34,565 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:29:34,565 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:29:34,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:29:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:29:34,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:29:34,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:29:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-11 02:29:34,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-11 02:29:34,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:34,603 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-11 02:29:34,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:29:34,604 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-11 02:29:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:29:34,604 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:34,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:34,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:29:34,818 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:34,819 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-11 02:29:34,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:34,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699832172] [2021-10-11 02:29:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:39,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:43,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:43,292 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:29:43,292 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:43,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:29:43,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:43 BoogieIcfgContainer [2021-10-11 02:29:43,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:43,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:43,515 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:43,515 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:43,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:32" (3/4) ... [2021-10-11 02:29:43,517 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:43,552 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8d47ce-4038-4a17-ba02-31bca931739c/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:43,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:43,554 INFO L168 Benchmark]: Toolchain (without parser) took 18181.83 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 41.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:43,555 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:43,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.82 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 38.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:43,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 37.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:43,557 INFO L168 Benchmark]: Boogie Preprocessor took 67.65 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 36.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:43,558 INFO L168 Benchmark]: RCFGBuilder took 7065.85 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 36.0 MB in the beginning and 52.3 MB in the end (delta: -16.3 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:43,558 INFO L168 Benchmark]: TraceAbstraction took 10593.99 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 43.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:43,559 INFO L168 Benchmark]: Witness Printer took 37.24 ms. Allocated memory is still 71.3 MB. Free memory was 43.2 MB in the beginning and 41.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:43,567 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 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.82 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 38.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 37.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.65 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 36.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7065.85 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 36.0 MB in the beginning and 52.3 MB in the end (delta: -16.3 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10593.99 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 43.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 37.24 ms. Allocated memory is still 71.3 MB. Free memory was 43.2 MB in the beginning and 41.5 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: - 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. VerificationResult: UNSAFE, OverallTime: 10.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...