./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ................................................................................................................................................................................................................................................. 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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:53:46,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:53:46,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:53:47,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:53:47,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:53:47,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:53:47,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:53:47,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:53:47,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:53:47,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:53:47,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:53:47,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:53:47,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:53:47,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:53:47,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:53:47,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:53:47,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:53:47,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:53:47,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:53:47,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:53:47,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:53:47,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:53:47,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:53:47,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:53:47,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:53:47,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:53:47,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:53:47,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:53:47,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:53:47,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:53:47,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:53:47,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:53:47,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:53:47,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:53:47,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:53:47,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:53:47,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:53:47,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:53:47,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:53:47,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:53:47,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:53:47,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:53:47,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:53:47,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:53:47,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:53:47,163 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:53:47,163 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:53:47,163 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:53:47,164 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:53:47,164 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:53:47,164 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:53:47,165 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:53:47,165 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:53:47,165 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:53:47,166 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:53:47,166 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:53:47,166 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:53:47,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:53:47,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:53:47,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:53:47,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:53:47,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:53:47,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:53:47,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:53:47,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:53:47,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:53:47,170 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:53:47,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:53:47,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:53:47,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:53:47,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:53:47,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:53:47,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:53:47,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:53:47,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:53:47,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:53:47,173 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:53:47,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:53:47,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:53:47,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:53:47,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:53:47,175 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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2021-10-13 06:53:47,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:53:47,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:53:47,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:53:47,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:53:47,580 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:53:47,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-13 06:53:47,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/210138a12/45dfd10b308046f1baadf71cadf1f37b/FLAGb3c41e5e8 [2021-10-13 06:53:48,257 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:53:48,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-13 06:53:48,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/210138a12/45dfd10b308046f1baadf71cadf1f37b/FLAGb3c41e5e8 [2021-10-13 06:53:48,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/210138a12/45dfd10b308046f1baadf71cadf1f37b [2021-10-13 06:53:48,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:53:48,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:53:48,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:53:48,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:53:48,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:53:48,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:53:48" (1/1) ... [2021-10-13 06:53:48,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf31ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:48, skipping insertion in model container [2021-10-13 06:53:48,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:53:48" (1/1) ... [2021-10-13 06:53:48,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:53:48,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:53:48,946 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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-13 06:53:48,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:53:48,964 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:53:48,984 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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-13 06:53:48,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:53:49,001 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:53:49,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49 WrapperNode [2021-10-13 06:53:49,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:53:49,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:53:49,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:53:49,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:53:49,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:53:49,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:53:49,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:53:49,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:53:49,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:53:49,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:53:49,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:53:49,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:53:49,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (1/1) ... [2021-10-13 06:53:49,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:53:49,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:53:49,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:53:49,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:53:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:53:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:53:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:53:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:53:49,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:53:49,530 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:53:49,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:53:49 BoogieIcfgContainer [2021-10-13 06:53:49,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:53:49,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:53:49,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:53:49,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:53:49,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:53:48" (1/3) ... [2021-10-13 06:53:49,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e9769b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:53:49, skipping insertion in model container [2021-10-13 06:53:49,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:49" (2/3) ... [2021-10-13 06:53:49,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e9769b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:53:49, skipping insertion in model container [2021-10-13 06:53:49,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:53:49" (3/3) ... [2021-10-13 06:53:49,551 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-10-13 06:53:49,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:53:49,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:53:49,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:53:49,648 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:53:49,648 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:53:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:53:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 06:53:49,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:53:49,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 06:53:49,680 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:53:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:53:49,687 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-13 06:53:49,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:53:49,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387460587] [2021-10-13 06:53:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:53:49,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:53:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:53:49,845 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:53:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:53:49,887 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 06:53:49,889 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:53:49,891 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:53:49,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:53:49,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:53:49,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:53:49 BoogieIcfgContainer [2021-10-13 06:53:49,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:53:49,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:53:49,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:53:49,920 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:53:49,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:53:49" (3/4) ... [2021-10-13 06:53:49,924 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 06:53:49,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:53:49,927 INFO L168 Benchmark]: Toolchain (without parser) took 1323.74 ms. Allocated memory is still 104.9 MB. Free memory was 60.7 MB in the beginning and 51.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:49,927 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 77.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:53:49,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.91 ms. Allocated memory is still 104.9 MB. Free memory was 60.3 MB in the beginning and 78.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:49,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:53:49,930 INFO L168 Benchmark]: Boogie Preprocessor took 23.66 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 76.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:49,931 INFO L168 Benchmark]: RCFGBuilder took 464.06 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 64.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:49,932 INFO L168 Benchmark]: TraceAbstraction took 383.98 ms. Allocated memory is still 104.9 MB. Free memory was 64.1 MB in the beginning and 51.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:53:49,932 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 104.9 MB. Free memory was 51.3 MB in the beginning and 51.0 MB in the end (delta: 278.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:53:49,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 104.9 MB. Free memory is still 77.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.91 ms. Allocated memory is still 104.9 MB. Free memory was 60.3 MB in the beginning and 78.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.36 ms. Allocated memory is still 104.9 MB. Free memory was 78.7 MB in the beginning and 77.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.66 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 76.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 464.06 ms. Allocated memory is still 104.9 MB. Free memory was 76.1 MB in the beginning and 64.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 383.98 ms. Allocated memory is still 104.9 MB. Free memory was 64.1 MB in the beginning and 51.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.06 ms. Allocated memory is still 104.9 MB. Free memory was 51.3 MB in the beginning and 51.0 MB in the end (delta: 278.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 268.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 20.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.9ms SsaConstructionTime, 47.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 06:53:49,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:53:52,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:53:52,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:53:52,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:53:52,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:53:52,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:53:52,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:53:52,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:53:52,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:53:52,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:53:52,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:53:52,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:53:52,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:53:52,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:53:52,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:53:52,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:53:52,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:53:52,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:53:52,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:53:52,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:53:52,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:53:52,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:53:52,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:53:52,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:53:52,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:53:52,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:53:52,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:53:52,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:53:52,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:53:52,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:53:52,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:53:52,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:53:52,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:53:52,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:53:52,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:53:52,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:53:52,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:53:52,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:53:52,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:53:52,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:53:52,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:53:52,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 06:53:52,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:53:52,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:53:52,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:53:52,799 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:53:52,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:53:52,800 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:53:52,800 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:53:52,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:53:52,800 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:53:52,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:53:52,805 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:53:52,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:53:52,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:53:52,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:53:52,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:53:52,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:53:52,806 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:53:52,807 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:53:52,807 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:53:52,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:53:52,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:53:52,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:53:52,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:53:52,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:53:52,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:53:52,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:53:52,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:53:52,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:53:52,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:53:52,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:53:52,812 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:53:52,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:53:52,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:53:52,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:53:52,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:53:52,814 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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2021-10-13 06:53:53,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:53:53,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:53:53,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:53:53,328 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:53:53,329 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:53:53,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-13 06:53:53,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/4b761584f/3da1d374c94b4118b4e7c00ee253a23b/FLAG1523723fb [2021-10-13 06:53:53,991 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:53:53,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-10-13 06:53:54,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/4b761584f/3da1d374c94b4118b4e7c00ee253a23b/FLAG1523723fb [2021-10-13 06:53:54,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/data/4b761584f/3da1d374c94b4118b4e7c00ee253a23b [2021-10-13 06:53:54,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:53:54,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:53:54,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:53:54,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:53:54,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:53:54,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57840390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54, skipping insertion in model container [2021-10-13 06:53:54,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:53:54,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:53:54,678 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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-13 06:53:54,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:53:54,698 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:53:54,735 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_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-10-13 06:53:54,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:53:54,763 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:53:54,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54 WrapperNode [2021-10-13 06:53:54,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:53:54,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:53:54,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:53:54,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:53:54,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:53:54,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:53:54,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:53:54,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:53:54,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:53:54,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:53:54,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:53:54,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:53:54,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (1/1) ... [2021-10-13 06:53:54,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:53:54,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:53:54,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:53:54,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:53:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:53:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:53:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:53:55,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:54:01,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:54:01,927 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 06:54:01,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:01 BoogieIcfgContainer [2021-10-13 06:54:01,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:54:01,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:54:01,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:54:01,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:54:01,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:53:54" (1/3) ... [2021-10-13 06:54:01,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@985fd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:01, skipping insertion in model container [2021-10-13 06:54:01,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:53:54" (2/3) ... [2021-10-13 06:54:01,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@985fd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:01, skipping insertion in model container [2021-10-13 06:54:01,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:01" (3/3) ... [2021-10-13 06:54:01,940 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-10-13 06:54:01,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:54:01,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:54:02,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:54:02,016 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:54:02,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:54:02,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:54:02,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:02,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:02,038 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:02,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:02,044 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-13 06:54:02,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:02,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608538720] [2021-10-13 06:54:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:02,060 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:02,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:02,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:02,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:54:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:03,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 06:54:03,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:03,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:03,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:03,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608538720] [2021-10-13 06:54:03,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608538720] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:03,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:03,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:54:03,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855277827] [2021-10-13 06:54:03,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 06:54:03,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:03,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 06:54:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 06:54:03,885 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:03,903 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-13 06:54:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 06:54:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 06:54:03,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:03,916 INFO L225 Difference]: With dead ends: 23 [2021-10-13 06:54:03,916 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 06:54:03,919 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 06:54:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 06:54:03,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 06:54:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 06:54:03,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-13 06:54:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:03,957 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 06:54:03,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 06:54:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 06:54:03,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:03,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:03,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:54:04,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:04,175 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:54:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-13 06:54:04,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:04,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754125155] [2021-10-13 06:54:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:04,178 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:04,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:04,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:54:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:54:12,862 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 06:55:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 06:55:09,900 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 06:55:09,900 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 06:55:09,902 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:55:09,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:55:10,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:55:10,110 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:55:10,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:55:10 BoogieIcfgContainer [2021-10-13 06:55:10,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:55:10,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:55:10,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:55:10,147 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:55:10,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:01" (3/4) ... [2021-10-13 06:55:10,149 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 06:55:10,193 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:55:10,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:55:10,196 INFO L168 Benchmark]: Toolchain (without parser) took 75818.88 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 33.1 MB in the beginning and 52.4 MB in the end (delta: -19.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:55:10,197 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:55:10,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.02 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.9 MB in the beginning and 56.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:10,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.14 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 54.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:10,199 INFO L168 Benchmark]: Boogie Preprocessor took 51.69 ms. Allocated memory is still 73.4 MB. Free memory was 54.8 MB in the beginning and 53.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:55:10,200 INFO L168 Benchmark]: RCFGBuilder took 7025.36 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 44.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:10,201 INFO L168 Benchmark]: TraceAbstraction took 68214.04 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 54.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:10,201 INFO L168 Benchmark]: Witness Printer took 47.49 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:10,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 384.02 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.9 MB in the beginning and 56.6 MB in the end (delta: -23.7 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.14 ms. Allocated memory is still 73.4 MB. Free memory was 56.4 MB in the beginning and 54.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.69 ms. Allocated memory is still 73.4 MB. Free memory was 54.8 MB in the beginning and 53.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7025.36 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 44.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 68214.04 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 54.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 47.49 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [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: 68108.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.1ms, AutomataDifference: 60.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, 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: 20.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.3ms SsaConstructionTime, 10133.5ms SatisfiabilityAnalysisTime, 226.6ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 06:55:10,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0f83c6d-85a6-43fb-a5c2-23c66f2ceb2e/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...