./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG --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 ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 .................................................................................................................................................................................................................................................. 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_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG --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 ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 ................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 05:11:22,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:11:22,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:11:22,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:11:22,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:11:22,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:11:22,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:11:22,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:11:22,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:11:22,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:11:22,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:11:22,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:11:22,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:11:22,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:11:22,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:11:22,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:11:22,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:11:22,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:11:22,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:11:22,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:11:22,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:11:22,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:11:22,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:11:22,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:11:22,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:11:22,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:11:22,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:11:22,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:11:22,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:11:22,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:11:22,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:11:22,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:11:22,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:11:22,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:11:22,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:11:22,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:11:22,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:11:22,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:11:22,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:11:22,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:11:22,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:11:22,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:11:22,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:11:22,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:11:22,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:11:22,279 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:11:22,280 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:11:22,280 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:11:22,280 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:11:22,280 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:11:22,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:11:22,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:11:22,282 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:11:22,283 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:11:22,283 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:11:22,283 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:11:22,283 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:11:22,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:11:22,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:11:22,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:11:22,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:11:22,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:11:22,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:11:22,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:11:22,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:11:22,286 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:11:22,286 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:11:22,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:11:22,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:11:22,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:11:22,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:11:22,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:11:22,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:11:22,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:11:22,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:11:22,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:11:22,291 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:11:22,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:11:22,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:11:22,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:11:22,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:11:22,293 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_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 [2021-10-29 05:11:22,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:11:22,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:11:22,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:11:22,592 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:11:22,593 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:11:22,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-29 05:11:22,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/0290c88e3/68c892207bdf4658a17da33dc7082bd6/FLAG8f29ce8eb [2021-10-29 05:11:23,191 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:11:23,192 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-29 05:11:23,199 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/0290c88e3/68c892207bdf4658a17da33dc7082bd6/FLAG8f29ce8eb [2021-10-29 05:11:23,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/0290c88e3/68c892207bdf4658a17da33dc7082bd6 [2021-10-29 05:11:23,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:11:23,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:11:23,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:11:23,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:11:23,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:11:23,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b9ec4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23, skipping insertion in model container [2021-10-29 05:11:23,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:11:23,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:11:23,805 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_d665030c-9a0e-4224-a3d3-8acf25bc87a6/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-29 05:11:23,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:11:23,818 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:11:23,836 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_d665030c-9a0e-4224-a3d3-8acf25bc87a6/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-29 05:11:23,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:11:23,852 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:11:23,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23 WrapperNode [2021-10-29 05:11:23,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:11:23,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:11:23,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:11:23,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:11:23,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:11:23,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:11:23,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:11:23,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:11:23,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:11:23,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:11:23,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:11:23,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:11:23,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (1/1) ... [2021-10-29 05:11:23,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:11:23,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:11:23,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:11:23,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:11:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:11:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:11:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:11:23,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:11:24,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:11:24,292 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:11:24,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:24 BoogieIcfgContainer [2021-10-29 05:11:24,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:11:24,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:11:24,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:11:24,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:11:24,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:11:23" (1/3) ... [2021-10-29 05:11:24,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c5c629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:24, skipping insertion in model container [2021-10-29 05:11:24,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:23" (2/3) ... [2021-10-29 05:11:24,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c5c629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:24, skipping insertion in model container [2021-10-29 05:11:24,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:24" (3/3) ... [2021-10-29 05:11:24,307 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-29 05:11:24,314 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:11:24,314 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:11:24,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:11:24,382 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:11:24,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:11:24,399 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) [2021-10-29 05:11:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:11:24,405 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:11:24,406 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:11:24,407 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:11:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:11:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-10-29 05:11:24,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:11:24,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267572193] [2021-10-29 05:11:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:11:24,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:11:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:11:24,578 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:11:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:11:24,629 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:11:24,633 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:11:24,634 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:11:24,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:11:24,645 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:11:24,648 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:11:24,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:11:24 BoogieIcfgContainer [2021-10-29 05:11:24,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:11:24,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:11:24,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:11:24,686 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:11:24,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:24" (3/4) ... [2021-10-29 05:11:24,691 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:11:24,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:11:24,699 INFO L168 Benchmark]: Toolchain (without parser) took 1120.41 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 46.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:24,700 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 66.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:24,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.96 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 73.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:24,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.80 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 71.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:24,705 INFO L168 Benchmark]: Boogie Preprocessor took 21.36 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 70.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:24,706 INFO L168 Benchmark]: RCFGBuilder took 382.61 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 60.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:24,712 INFO L168 Benchmark]: TraceAbstraction took 376.37 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 46.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:24,716 INFO L168 Benchmark]: Witness Printer took 6.98 ms. Allocated memory is still 96.5 MB. Free memory was 46.7 MB in the beginning and 46.2 MB in the end (delta: 497.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:24,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 66.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.96 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 73.4 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.80 ms. Allocated memory is still 96.5 MB. Free memory was 73.4 MB in the beginning and 71.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.36 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 70.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 382.61 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 60.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 376.37 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 46.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.98 ms. Allocated memory is still 96.5 MB. Free memory was 46.7 MB in the beginning and 46.2 MB in the end (delta: 497.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 29]: 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 28, overapproximation of someBinaryArithmeticFLOAToperation at line 26. Possible FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s 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, 0.0s 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 [2021-10-29 05:11:24,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/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-b2eff8b [2021-10-29 05:11:27,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:11:27,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:11:27,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:11:27,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:11:27,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:11:27,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:11:27,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:11:27,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:11:27,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:11:27,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:11:27,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:11:27,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:11:27,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:11:27,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:11:27,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:11:27,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:11:27,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:11:27,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:11:27,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:11:27,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:11:27,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:11:27,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:11:27,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:11:27,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:11:27,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:11:27,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:11:27,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:11:27,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:11:27,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:11:27,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:11:27,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:11:27,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:11:27,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:11:27,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:11:27,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:11:27,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:11:27,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:11:27,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:11:27,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:11:27,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:11:27,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:11:27,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:11:27,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:11:27,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:11:27,620 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:11:27,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:11:27,620 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:11:27,621 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:11:27,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:11:27,621 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:11:27,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:11:27,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:11:27,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:11:27,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:11:27,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:11:27,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:11:27,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:11:27,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:11:27,626 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:11:27,626 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:11:27,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:11:27,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:11:27,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:11:27,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:11:27,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:11:27,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:11:27,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:11:27,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:11:27,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:11:27,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:11:27,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:11:27,629 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:11:27,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:11:27,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:11:27,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:11:27,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:11:27,630 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_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccbd0741eabce6aba13a6c9228bba784baa730da91d68b5dbc413b43d2eb52c3 [2021-10-29 05:11:28,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:11:28,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:11:28,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:11:28,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:11:28,059 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:11:28,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-29 05:11:28,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/d9454c2b8/2d884949341845048f896182da08f279/FLAGccfb07867 [2021-10-29 05:11:28,686 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:11:28,687 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/sv-benchmarks/c/floats-cdfpl/square_1.i [2021-10-29 05:11:28,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/d9454c2b8/2d884949341845048f896182da08f279/FLAGccfb07867 [2021-10-29 05:11:29,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/data/d9454c2b8/2d884949341845048f896182da08f279 [2021-10-29 05:11:29,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:11:29,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:11:29,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:11:29,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:11:29,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:11:29,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1262521f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29, skipping insertion in model container [2021-10-29 05:11:29,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:11:29,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:11:29,347 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_d665030c-9a0e-4224-a3d3-8acf25bc87a6/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-29 05:11:29,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:11:29,381 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:11:29,404 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_d665030c-9a0e-4224-a3d3-8acf25bc87a6/sv-benchmarks/c/floats-cdfpl/square_1.i[1128,1141] [2021-10-29 05:11:29,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:11:29,436 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:11:29,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29 WrapperNode [2021-10-29 05:11:29,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:11:29,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:11:29,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:11:29,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:11:29,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:11:29,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:11:29,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:11:29,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:11:29,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:11:29,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:11:29,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:11:29,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:11:29,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (1/1) ... [2021-10-29 05:11:29,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:11:29,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:11:29,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:11:29,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:11:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:11:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:11:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:11:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:11:32,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:11:32,055 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-29 05:11:32,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:32 BoogieIcfgContainer [2021-10-29 05:11:32,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:11:32,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:11:32,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:11:32,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:11:32,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:11:29" (1/3) ... [2021-10-29 05:11:32,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a271d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:32, skipping insertion in model container [2021-10-29 05:11:32,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:11:29" (2/3) ... [2021-10-29 05:11:32,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a271d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:11:32, skipping insertion in model container [2021-10-29 05:11:32,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:32" (3/3) ... [2021-10-29 05:11:32,068 INFO L111 eAbstractionObserver]: Analyzing ICFG square_1.i [2021-10-29 05:11:32,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:11:32,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:11:32,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:11:32,144 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:11:32,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:11:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:11:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:11:32,166 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:11:32,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:11:32,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:11:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:11:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-29 05:11:32,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:11:32,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591830154] [2021-10-29 05:11:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:11:32,192 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:11:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:11:32,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:11:32,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:11:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:11:32,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:11:32,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:11:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:11:32,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:11:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:11:32,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:11:32,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591830154] [2021-10-29 05:11:32,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591830154] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:11:32,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:11:33,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:11:33,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670014250] [2021-10-29 05:11:33,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:11:33,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:11:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:11:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:11:33,029 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-29 05:11:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:11:33,045 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-29 05:11:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:11:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2021-10-29 05:11:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:11:33,056 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:11:33,057 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 05:11:33,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:11:33,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 05:11:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 05:11:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2021-10-29 05:11:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-29 05:11:33,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-29 05:11:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:11:33,095 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-29 05:11:33,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-29 05:11:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-29 05:11:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:11:33,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:11:33,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:11:33,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:11:33,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:11:33,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:11:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:11:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-29 05:11:33,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:11:33,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034317960] [2021-10-29 05:11:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:11:33,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:11:33,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:11:33,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:11:33,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:11:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:11:45,955 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:11:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:11:48,971 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:11:48,971 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:11:48,972 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:11:48,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 05:11:49,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:11:49,177 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:11:49,180 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:11:49,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:11:49 BoogieIcfgContainer [2021-10-29 05:11:49,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:11:49,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:11:49,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:11:49,206 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:11:49,207 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:11:32" (3/4) ... [2021-10-29 05:11:49,210 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:11:49,283 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:11:49,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:11:49,286 INFO L168 Benchmark]: Toolchain (without parser) took 20209.10 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 37.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:49,289 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 69.2 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:49,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.84 ms. Allocated memory is still 69.2 MB. Free memory was 48.6 MB in the beginning and 38.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:49,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.44 ms. Allocated memory is still 69.2 MB. Free memory was 38.4 MB in the beginning and 51.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:49,296 INFO L168 Benchmark]: Boogie Preprocessor took 52.16 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 50.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:49,296 INFO L168 Benchmark]: RCFGBuilder took 2483.52 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 41.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:49,297 INFO L168 Benchmark]: TraceAbstraction took 17145.38 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 38.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:11:49,297 INFO L168 Benchmark]: Witness Printer took 77.45 ms. Allocated memory is still 69.2 MB. Free memory was 38.8 MB in the beginning and 37.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:11:49,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 69.2 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.84 ms. Allocated memory is still 69.2 MB. Free memory was 48.6 MB in the beginning and 38.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.44 ms. Allocated memory is still 69.2 MB. Free memory was 38.4 MB in the beginning and 51.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.16 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 50.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2483.52 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 41.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17145.38 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 38.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 77.45 ms. Allocated memory is still 69.2 MB. Free memory was 38.8 MB in the beginning and 37.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L23] float x = IN; [L25-L26] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L28] COND TRUE !(result >= 0.0f && result < 1.39f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 13.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 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! [2021-10-29 05:11:49,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d665030c-9a0e-4224-a3d3-8acf25bc87a6/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...