./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/square_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8 --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:03,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:03,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:03,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:03,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:03,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:03,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:03,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:03,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:03,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:03,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:03,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:03,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:03,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:03,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:03,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:03,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:03,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:03,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:03,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:03,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:03,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:03,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:03,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:03,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:03,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:03,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:03,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:03,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:03,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:03,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:03,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:03,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:03,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:03,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:03,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:03,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:03,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:03,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:03,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:03,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:03,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:39:03,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:03,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:03,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:03,448 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:03,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:03,449 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:03,451 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:39:03,451 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:03,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:03,456 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:39:03,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:39:03,456 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:03,457 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:39:03,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:39:03,457 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:39:03,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:03,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:03,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:39:03,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:03,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:03,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:03,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:03,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:03,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:03,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:03,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:03,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:03,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:03,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:03,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:03,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:03,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:03,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:03,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:03,464 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:39:03,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:39:03,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:03,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:03,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:03,465 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_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-11-07 01:39:03,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:03,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:03,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:03,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:03,770 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:03,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-07 01:39:03,838 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/3b98bd44b/b3b5f95122bb4faa9e1c372f87b747bd/FLAGdd7ba44e1 [2021-11-07 01:39:04,338 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:04,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-07 01:39:04,346 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/3b98bd44b/b3b5f95122bb4faa9e1c372f87b747bd/FLAGdd7ba44e1 [2021-11-07 01:39:04,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/3b98bd44b/b3b5f95122bb4faa9e1c372f87b747bd [2021-11-07 01:39:04,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:04,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:04,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:04,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:04,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:04,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:04" (1/1) ... [2021-11-07 01:39:04,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b15745d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:04, skipping insertion in model container [2021-11-07 01:39:04,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:04" (1/1) ... [2021-11-07 01:39:04,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:04,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:04,965 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_53d6e652-2228-43b2-85be-4abb00382f54/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-11-07 01:39:04,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:04,976 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:39:04,992 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_53d6e652-2228-43b2-85be-4abb00382f54/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-11-07 01:39:04,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:05,005 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:39:05,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05 WrapperNode [2021-11-07 01:39:05,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:05,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:05,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:39:05,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:39:05,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:05,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:39:05,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:39:05,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:39:05,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:39:05,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:39:05,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:39:05,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:39:05,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (1/1) ... [2021-11-07 01:39:05,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:05,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:05,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:39:05,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:39:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:39:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:39:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:39:05,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:39:05,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:39:05,331 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:39:05,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:05 BoogieIcfgContainer [2021-11-07 01:39:05,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:39:05,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:39:05,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:39:05,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:39:05,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:39:04" (1/3) ... [2021-11-07 01:39:05,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e76298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:05, skipping insertion in model container [2021-11-07 01:39:05,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:05" (2/3) ... [2021-11-07 01:39:05,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e76298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:05, skipping insertion in model container [2021-11-07 01:39:05,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:05" (3/3) ... [2021-11-07 01:39:05,343 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-11-07 01:39:05,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:39:05,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:39:05,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:39:05,403 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 [2021-11-07 01:39:05,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:39:05,417 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) [2021-11-07 01:39:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:39:05,421 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:05,422 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:39:05,423 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash 56123, now seen corresponding path program 1 times [2021-11-07 01:39:05,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:39:05,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767408652] [2021-11-07 01:39:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:05,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:39:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:39:05,545 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:39:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:39:05,587 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:39:05,590 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:39:05,591 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:39:05,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:39:05,596 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:39:05,599 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:39:05,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:39:05 BoogieIcfgContainer [2021-11-07 01:39:05,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:39:05,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:39:05,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:39:05,616 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:39:05,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:05" (3/4) ... [2021-11-07 01:39:05,619 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:39:05,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:39:05,622 INFO L168 Benchmark]: Toolchain (without parser) took 892.40 ms. Allocated memory is still 98.6 MB. Free memory was 64.4 MB in the beginning and 47.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:05,623 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 74.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:39:05,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.30 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 74.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:05,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.90 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 72.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:05,625 INFO L168 Benchmark]: Boogie Preprocessor took 18.66 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 995.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:05,626 INFO L168 Benchmark]: RCFGBuilder took 280.51 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 60.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:05,627 INFO L168 Benchmark]: TraceAbstraction took 279.14 ms. Allocated memory is still 98.6 MB. Free memory was 60.2 MB in the beginning and 47.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:39:05,627 INFO L168 Benchmark]: Witness Printer took 4.15 ms. Allocated memory is still 98.6 MB. Free memory was 47.6 MB in the beginning and 47.1 MB in the end (delta: 513.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:39:05,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 74.5 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.30 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 74.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.90 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 72.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.66 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 995.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 280.51 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 60.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 279.14 ms. Allocated memory is still 98.6 MB. Free memory was 60.2 MB in the beginning and 47.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.15 ms. Allocated memory is still 98.6 MB. Free memory was 47.6 MB in the beginning and 47.1 MB in the end (delta: 513.2 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 < 1.39843f) [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 [2021-11-07 01:39:05,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/square_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8 --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 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:39:08,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:39:08,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:39:08,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:39:08,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:39:08,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:39:08,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:39:08,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:39:08,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:39:08,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:39:08,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:39:08,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:39:08,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:39:08,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:39:08,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:39:08,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:39:08,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:39:08,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:39:08,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:39:08,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:39:08,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:39:08,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:39:08,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:39:08,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:39:08,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:39:08,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:39:08,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:39:08,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:39:08,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:39:08,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:39:08,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:39:08,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:39:08,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:39:08,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:39:08,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:39:08,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:39:08,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:39:08,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:39:08,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:39:08,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:39:08,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:39:08,183 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:39:08,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:39:08,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:39:08,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:39:08,211 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:39:08,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:39:08,212 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:39:08,212 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:39:08,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:39:08,212 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:39:08,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:39:08,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:39:08,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:39:08,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:39:08,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:39:08,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:39:08,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:39:08,215 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:39:08,215 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:39:08,215 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:39:08,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:39:08,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:39:08,216 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:39:08,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:39:08,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:39:08,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:39:08,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:39:08,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:08,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:39:08,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:39:08,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:39:08,217 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:39:08,218 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:39:08,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:39:08,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:39:08,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:39:08,218 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_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54bc71b58dbe807c61e65d61687d7dcd868b453f3ec0cc1b5cee1fe449bc0bdf [2021-11-07 01:39:08,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:39:08,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:39:08,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:39:08,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:39:08,629 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:39:08,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-07 01:39:08,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/de0238fee/18ea4d7ba47c4e6a9cef043f6fee8f96/FLAG835bce5d3 [2021-11-07 01:39:09,233 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:39:09,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/sv-benchmarks/c/floats-cdfpl/square_3.i [2021-11-07 01:39:09,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/de0238fee/18ea4d7ba47c4e6a9cef043f6fee8f96/FLAG835bce5d3 [2021-11-07 01:39:09,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/data/de0238fee/18ea4d7ba47c4e6a9cef043f6fee8f96 [2021-11-07 01:39:09,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:39:09,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:39:09,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:09,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:39:09,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:39:09,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:09,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9c7878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09, skipping insertion in model container [2021-11-07 01:39:09,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:09,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:39:09,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:39:09,867 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_53d6e652-2228-43b2-85be-4abb00382f54/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-11-07 01:39:09,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:09,898 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:39:09,922 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_53d6e652-2228-43b2-85be-4abb00382f54/sv-benchmarks/c/floats-cdfpl/square_3.i[1131,1144] [2021-11-07 01:39:09,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:39:09,980 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:39:09,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09 WrapperNode [2021-11-07 01:39:09,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:39:09,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:09,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:39:09,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:39:10,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:39:10,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:39:10,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:39:10,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:39:10,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:39:10,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:39:10,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:39:10,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:39:10,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (1/1) ... [2021-11-07 01:39:10,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:39:10,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:39:10,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:39:10,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:39:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:39:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:39:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:39:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:39:12,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:39:12,499 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:39:12,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:12 BoogieIcfgContainer [2021-11-07 01:39:12,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:39:12,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:39:12,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:39:12,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:39:12,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:39:09" (1/3) ... [2021-11-07 01:39:12,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f4d437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:12, skipping insertion in model container [2021-11-07 01:39:12,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:39:09" (2/3) ... [2021-11-07 01:39:12,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f4d437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:39:12, skipping insertion in model container [2021-11-07 01:39:12,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:12" (3/3) ... [2021-11-07 01:39:12,511 INFO L111 eAbstractionObserver]: Analyzing ICFG square_3.i [2021-11-07 01:39:12,517 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:39:12,517 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:39:12,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:39:12,574 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 [2021-11-07 01:39:12,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:39:12,587 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) [2021-11-07 01:39:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:39:12,592 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:12,593 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:39:12,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:12,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-07 01:39:12,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:12,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771602766] [2021-11-07 01:39:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:12,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:12,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:12,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:39:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:39:13,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:39:13,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:39:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:13,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:39:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:39:13,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:39:13,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771602766] [2021-11-07 01:39:13,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771602766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:39:13,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:39:13,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:39:13,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827227955] [2021-11-07 01:39:13,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:39:13,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:39:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:39:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:39:13,379 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) [2021-11-07 01:39:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:39:13,392 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-07 01:39:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:39:13,394 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 [2021-11-07 01:39:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:39:13,401 INFO L225 Difference]: With dead ends: 19 [2021-11-07 01:39:13,402 INFO L226 Difference]: Without dead ends: 7 [2021-11-07 01:39:13,404 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 [2021-11-07 01:39:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-07 01:39:13,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-07 01:39:13,433 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) [2021-11-07 01:39:13,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-07 01:39:13,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-07 01:39:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:39:13,436 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-07 01:39:13,436 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) [2021-11-07 01:39:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-07 01:39:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:39:13,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:39:13,437 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:39:13,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:39:13,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:39:13,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:39:13,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:39:13,655 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-07 01:39:13,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:39:13,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716841852] [2021-11-07 01:39:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:39:13,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:39:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:39:13,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:39:13,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:41:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:41:34,712 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:43:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:43:02,776 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:43:02,776 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:43:02,778 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:43:02,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:43:02,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:43:02,984 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:43:02,987 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:43:03,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:43:03 BoogieIcfgContainer [2021-11-07 01:43:03,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:43:03,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:43:03,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:43:03,022 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:43:03,023 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:39:12" (3/4) ... [2021-11-07 01:43:03,026 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:43:03,075 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:43:03,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:43:03,077 INFO L168 Benchmark]: Toolchain (without parser) took 233468.58 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 43.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:43:03,078 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 53.6 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:43:03,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.89 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 56.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:43:03,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.02 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 55.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:43:03,080 INFO L168 Benchmark]: Boogie Preprocessor took 45.14 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 54.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:43:03,081 INFO L168 Benchmark]: RCFGBuilder took 2396.64 ms. Allocated memory is still 73.4 MB. Free memory was 54.0 MB in the beginning and 45.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:43:03,081 INFO L168 Benchmark]: TraceAbstraction took 230515.77 ms. Allocated memory is still 73.4 MB. Free memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: -959.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:43:03,082 INFO L168 Benchmark]: Witness Printer took 53.60 ms. Allocated memory is still 73.4 MB. Free memory was 45.6 MB in the beginning and 43.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:43:03,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 53.6 MB in the beginning and 53.6 MB in the end (delta: 55.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.89 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 56.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.02 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 55.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.14 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 54.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2396.64 ms. Allocated memory is still 73.4 MB. Free memory was 54.0 MB in the beginning and 45.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 230515.77 ms. Allocated memory is still 73.4 MB. Free memory was 44.6 MB in the beginning and 45.6 MB in the end (delta: -959.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.60 ms. Allocated memory is still 73.4 MB. Free memory was 45.6 MB in the beginning and 43.6 MB in the end (delta: 2.0 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, 0.0s 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 < 1.39843f) [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 230.4s, 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, 141.5s 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! [2021-11-07 01:43:03,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6e652-2228-43b2-85be-4abb00382f54/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE