./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7 --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 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:08:13,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:08:13,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:08:13,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:08:13,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:08:13,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:08:13,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:08:13,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:08:13,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:08:13,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:08:13,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:08:13,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:08:13,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:08:13,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:08:13,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:08:13,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:08:13,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:08:13,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:08:13,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:08:13,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:08:13,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:08:13,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:08:13,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:08:13,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:08:13,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:08:13,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:08:13,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:08:13,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:08:13,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:08:13,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:08:13,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:08:13,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:08:13,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:08:13,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:08:13,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:08:13,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:08:13,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:08:13,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:08:13,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:08:13,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:08:13,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:08:13,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:08:13,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:08:13,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:08:13,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:08:13,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:08:13,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:08:13,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:08:13,511 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:08:13,511 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:08:13,511 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:08:13,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:08:13,511 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:08:13,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:08:13,512 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:08:13,512 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:08:13,512 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:08:13,512 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:08:13,513 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:08:13,513 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:08:13,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:08:13,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:08:13,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:08:13,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:08:13,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:08:13,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:08:13,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:08:13,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:08:13,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:08:13,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:08:13,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:08:13,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:08:13,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:08:13,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:08:13,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:08:13,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:08:13,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:08:13,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:08:13,517 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:08:13,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:08:13,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:08:13,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:08:13,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:08:13,518 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_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 [2021-11-25 19:08:13,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:08:13,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:08:13,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:08:13,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:08:13,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:08:13,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-11-25 19:08:13,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/ff5e5b1e8/d92372e219124c76a91142a2d593e478/FLAGaa8d10ac4 [2021-11-25 19:08:14,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:08:14,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-11-25 19:08:14,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/ff5e5b1e8/d92372e219124c76a91142a2d593e478/FLAGaa8d10ac4 [2021-11-25 19:08:14,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/ff5e5b1e8/d92372e219124c76a91142a2d593e478 [2021-11-25 19:08:14,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:08:14,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:08:14,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:08:14,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:08:14,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:08:14,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:08:14" (1/1) ... [2021-11-25 19:08:14,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78fce623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:14, skipping insertion in model container [2021-11-25 19:08:14,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:08:14" (1/1) ... [2021-11-25 19:08:14,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:08:14,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:08:15,114 WARN L230 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_85b233e1-ac15-4080-856b-b7876e293d21/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-11-25 19:08:15,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:08:15,127 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:08:15,147 WARN L230 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_85b233e1-ac15-4080-856b-b7876e293d21/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-11-25 19:08:15,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:08:15,163 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:08:15,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15 WrapperNode [2021-11-25 19:08:15,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:08:15,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:08:15,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:08:15,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:08:15,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,209 INFO L137 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-11-25 19:08:15,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:08:15,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:08:15,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:08:15,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:08:15,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:08:15,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:08:15,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:08:15,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:08:15,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (1/1) ... [2021-11-25 19:08:15,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:08:15,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:15,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:08:15,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-25 19:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-25 19:08:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:08:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:08:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:08:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:08:15,398 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:08:15,399 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:08:15,580 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:08:15,599 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:08:15,600 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:08:15,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:08:15 BoogieIcfgContainer [2021-11-25 19:08:15,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:08:15,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:08:15,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:08:15,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:08:15,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:08:14" (1/3) ... [2021-11-25 19:08:15,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6e08d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:08:15, skipping insertion in model container [2021-11-25 19:08:15,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:15" (2/3) ... [2021-11-25 19:08:15,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b6e08d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:08:15, skipping insertion in model container [2021-11-25 19:08:15,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:08:15" (3/3) ... [2021-11-25 19:08:15,610 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2021-11-25 19:08:15,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:08:15,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:08:15,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:08:15,693 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 [2021-11-25 19:08:15,694 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:08:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 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) [2021-11-25 19:08:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:08:15,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:15,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:15,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:15,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash 179408343, now seen corresponding path program 1 times [2021-11-25 19:08:15,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:15,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904314918] [2021-11-25 19:08:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:15,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:08:15,912 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:08:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:08:15,981 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:08:15,984 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:08:15,986 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:08:15,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:08:15,993 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 19:08:15,996 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:08:16,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:08:16 BoogieIcfgContainer [2021-11-25 19:08:16,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:08:16,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:08:16,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:08:16,037 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:08:16,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:08:15" (3/4) ... [2021-11-25 19:08:16,041 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:08:16,041 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:08:16,043 INFO L158 Benchmark]: Toolchain (without parser) took 1192.91ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 64.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2021-11-25 19:08:16,044 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:08:16,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.29ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 92.4MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:08:16,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.66ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 90.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:08:16,046 INFO L158 Benchmark]: Boogie Preprocessor took 45.67ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:08:16,051 INFO L158 Benchmark]: RCFGBuilder took 344.85ms. Allocated memory is still 117.4MB. Free memory was 89.6MB in the beginning and 79.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:08:16,052 INFO L158 Benchmark]: TraceAbstraction took 429.26ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 65.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 19:08:16,053 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 64.8MB in the end (delta: 385.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:08:16,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory was 87.8MB in the beginning and 87.8MB in the end (delta: 25.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.29ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 92.4MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.66ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 90.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.67ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.85ms. Allocated memory is still 117.4MB. Free memory was 89.6MB in the beginning and 79.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 429.26ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 65.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 117.4MB. Free memory was 65.2MB in the beginning and 64.8MB in the end (delta: 385.9kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L1] int __return_main; [L17] float __return_72; [L18] int __return_87; [L21] float main__a; [L22] float main__r; [L23] main__a = __VERIFIER_nondet_float() [L24] int main____CPAchecker_TMP_0; VAL [__return_72=0, __return_87=0, __return_main=0] [L25] COND TRUE main__a >= 0.10000000149011612 VAL [__return_72=0, __return_87=0, __return_main=0] [L27] COND TRUE main__a <= 100.0 [L29] main____CPAchecker_TMP_0 = 1 VAL [__return_72=0, __return_87=0, __return_main=0, main____CPAchecker_TMP_0=1] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] float __tmp_1; [L34] __tmp_1 = main__a [L35] float InvSqrt__x; [L36] InvSqrt__x = __tmp_1 [L37] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L38] union float_int InvSqrt__i; [L39] InvSqrt__i.f = InvSqrt__x [L40] EXPR InvSqrt__i.i [L40] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L41] EXPR InvSqrt__i.f [L41] InvSqrt__x = InvSqrt__i.f [L42] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L43] __return_72 = InvSqrt__x [L44] main__r = __return_72 [L45] int main____CPAchecker_TMP_1; VAL [__return_72=1597463010, __return_87=0, __return_main=0, __tmp_1=1597463009, InvSqrt__i={5:0}, InvSqrt__x=1597463010, main____CPAchecker_TMP_0=1, main__a=1597463009, main__r=1597463010] [L46] COND FALSE !(main__r >= 0.0) VAL [__return_72=1597463010, __return_87=0, __return_main=0, __tmp_1=1597463009, InvSqrt__i={5:0}, InvSqrt__x=1597463010, main____CPAchecker_TMP_0=1, main__a=1597463009, main__r=1597463010] [L72] main____CPAchecker_TMP_1 = 0 VAL [__return_72=1597463010, __return_87=0, __return_main=0, __tmp_1=1597463009, InvSqrt__i={5:0}, InvSqrt__x=1597463010, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463009, main__r=1597463010] [L53] int __tmp_2; [L54] __tmp_2 = main____CPAchecker_TMP_1 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_2 VAL [__return_72=1597463010, __return_87=0, __return_main=0, __tmp_1=1597463009, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463010, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463009, main__r=1597463010] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_72=1597463010, __return_87=0, __return_main=0, __tmp_1=1597463009, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463010, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463009, main__r=1597463010] [L59] reach_error() VAL [__return_72=1597463010, __return_87=0, __return_main=0, __tmp_1=1597463009, __tmp_2=0, __VERIFIER_assert__cond=0, InvSqrt__i={5:0}, InvSqrt__x=1597463010, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=1597463009, main__r=1597463010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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 [2021-11-25 19:08:16,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/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_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7 --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 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:08:18,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:08:18,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:08:18,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:08:18,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:08:18,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:08:18,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:08:18,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:08:18,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:08:18,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:08:18,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:08:18,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:08:18,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:08:18,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:08:18,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:08:18,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:08:18,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:08:18,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:08:18,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:08:18,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:08:18,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:08:18,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:08:18,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:08:18,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:08:18,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:08:18,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:08:18,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:08:18,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:08:18,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:08:18,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:08:18,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:08:18,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:08:18,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:08:18,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:08:18,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:08:18,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:08:18,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:08:18,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:08:18,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:08:18,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:08:18,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:08:18,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 19:08:18,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:08:18,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:08:18,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:08:18,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:08:18,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:08:18,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:08:18,646 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:08:18,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:08:18,647 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:08:18,647 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:08:18,647 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:08:18,648 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:08:18,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:08:18,649 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:08:18,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:08:18,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:08:18,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:08:18,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:08:18,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:08:18,650 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:08:18,650 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:08:18,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:08:18,651 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:08:18,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:08:18,651 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:08:18,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:08:18,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:08:18,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:08:18,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:08:18,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:08:18,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:08:18,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:08:18,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:08:18,653 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:08:18,653 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:08:18,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:08:18,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:08:18,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:08:18,654 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_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d80131755697383884f625dd9587f1c200aa06d2b7c943b2856d52f75da1766 [2021-11-25 19:08:19,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:08:19,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:08:19,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:08:19,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:08:19,071 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:08:19,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-11-25 19:08:19,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/725090312/6a9b9e2074114fb58d56c473d57ba469/FLAG0f71125d5 [2021-11-25 19:08:19,613 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:08:19,613 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-11-25 19:08:19,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/725090312/6a9b9e2074114fb58d56c473d57ba469/FLAG0f71125d5 [2021-11-25 19:08:20,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/data/725090312/6a9b9e2074114fb58d56c473d57ba469 [2021-11-25 19:08:20,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:08:20,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:08:20,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:08:20,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:08:20,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:08:20,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfa73cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20, skipping insertion in model container [2021-11-25 19:08:20,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:08:20,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:08:20,205 WARN L230 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_85b233e1-ac15-4080-856b-b7876e293d21/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-11-25 19:08:20,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:08:20,221 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:08:20,277 WARN L230 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_85b233e1-ac15-4080-856b-b7876e293d21/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] [2021-11-25 19:08:20,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:08:20,306 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:08:20,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20 WrapperNode [2021-11-25 19:08:20,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:08:20,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:08:20,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:08:20,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:08:20,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,364 INFO L137 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-11-25 19:08:20,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:08:20,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:08:20,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:08:20,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:08:20,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:08:20,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:08:20,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:08:20,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:08:20,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (1/1) ... [2021-11-25 19:08:20,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:08:20,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:20,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:08:20,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:08:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:08:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:08:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:08:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-25 19:08:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:08:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:08:20,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:08:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-25 19:08:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:08:20,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:08:20,610 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:08:20,611 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:08:23,459 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:08:23,464 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:08:23,465 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:08:23,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:08:23 BoogieIcfgContainer [2021-11-25 19:08:23,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:08:23,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:08:23,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:08:23,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:08:23,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:08:20" (1/3) ... [2021-11-25 19:08:23,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e8d96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:08:23, skipping insertion in model container [2021-11-25 19:08:23,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:08:20" (2/3) ... [2021-11-25 19:08:23,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e8d96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:08:23, skipping insertion in model container [2021-11-25 19:08:23,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:08:23" (3/3) ... [2021-11-25 19:08:23,473 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2021-11-25 19:08:23,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:08:23,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:08:23,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:08:23,557 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 [2021-11-25 19:08:23,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:08:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-11-25 19:08:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:08:23,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:23,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:23,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:23,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2137295023, now seen corresponding path program 1 times [2021-11-25 19:08:23,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:08:23,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922649285] [2021-11-25 19:08:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:23,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:08:23,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:08:23,613 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:08:23,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:08:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:25,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 19:08:25,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:42,946 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (= |c_ULTIMATE.start_main_~main__r~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse1)) .cse0) .cse0))))))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))))) is different from false [2021-11-25 19:08:45,011 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (= |c_ULTIMATE.start_main_~main__r~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse1)) .cse0) .cse0))))))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0))))))) is different from true [2021-11-25 19:09:02,080 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53))) (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0))))) is different from false [2021-11-25 19:09:04,155 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_4| (_ BitVec 32))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_4|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_4|))))) (and (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse1 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_4| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse1) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse0)) .cse1) .cse1))))))) (_ +zero 11 53))) (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 100.0))))) is different from true [2021-11-25 19:09:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:09:49,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:49,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922649285] [2021-11-25 19:09:49,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922649285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:49,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:49,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:09:49,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231721958] [2021-11-25 19:09:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:49,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:09:49,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:09:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=10, Unknown=4, NotChecked=14, Total=42 [2021-11-25 19:09:49,218 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 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 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-11-25 19:09:52,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:52,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:52,971 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-11-25 19:09:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:09:52,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2021-11-25 19:09:52,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:52,985 INFO L225 Difference]: With dead ends: 32 [2021-11-25 19:09:52,985 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 19:09:52,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=14, Invalid=10, Unknown=4, NotChecked=14, Total=42 [2021-11-25 19:09:52,991 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:52,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 1 Unknown, 38 Unchecked, 3.7s Time] [2021-11-25 19:09:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 19:09:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 19:09:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2021-11-25 19:09:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-25 19:09:53,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2021-11-25 19:09:53,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:53,023 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-25 19:09:53,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-11-25 19:09:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-25 19:09:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:09:53,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:53,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:53,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:53,231 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2140661612, now seen corresponding path program 1 times [2021-11-25 19:09:53,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:53,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781679631] [2021-11-25 19:09:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:53,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:53,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:53,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:53,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:09:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:53,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:09:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:09:53,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:53,822 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:09:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781679631] [2021-11-25 19:09:53,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781679631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:53,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:53,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:09:53,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863232208] [2021-11-25 19:09:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:53,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:09:53,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:09:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:09:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:09:53,825 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:09:56,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:56,337 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-11-25 19:09:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:09:56,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-25 19:09:56,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:56,339 INFO L225 Difference]: With dead ends: 16 [2021-11-25 19:09:56,339 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 19:09:56,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:09:56,340 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:56,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-25 19:09:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 19:09:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 19:09:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 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) [2021-11-25 19:09:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-11-25 19:09:56,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2021-11-25 19:09:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:56,345 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-11-25 19:09:56,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:09:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-11-25 19:09:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:09:56,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:56,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:56,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-25 19:09:56,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:09:56,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1946484073, now seen corresponding path program 1 times [2021-11-25 19:09:56,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:09:56,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83636132] [2021-11-25 19:09:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:56,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:09:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:09:56,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:09:56,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:09:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:58,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:09:58,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:16,019 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_7|))))) (and (= |c_ULTIMATE.start_main_~main__r~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_7| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse1)) .cse0) .cse0))))))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 19:10:31,341 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_7|))))) (and (= |c_ULTIMATE.start_main_~main__r~0#1| ((_ to_fp 8 24) c_currentRoundingMode (let ((.cse0 (let ((.cse2 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_7| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode .cse0) (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 2.0)) ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)) .cse1)) .cse0) .cse0))))))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 100.0)) (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 2500000037252903.0 25000000000000000.0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~main__r~0#1|) (_ +zero 11 53))) is different from false [2021-11-25 19:10:53,156 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_7|))))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse2 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_7| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse2) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse1)) .cse2) .cse2))))))))) (and (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.geq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)))))) is different from false [2021-11-25 19:10:55,236 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_7| (_ BitVec 32))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_7|))))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (let ((.cse2 (let ((.cse3 (bvadd (_ bv1597463007 32) (bvneg (bvashr |v_skolemized_q#valueAsBitvector_7| (_ bv1 32)))))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))))) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven .cse2) (fp.sub roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 3.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 2.0)) .cse1)) .cse2) .cse2))))))))) (and (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.geq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 2500000037252903.0 25000000000000000.0))) (fp.geq .cse0 (_ +zero 11 53)) (fp.leq .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 100.0)))))) is different from true [2021-11-25 19:11:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:11:53,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:11:53,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:11:53,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83636132] [2021-11-25 19:11:53,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83636132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:53,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:53,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:11:53,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380334566] [2021-11-25 19:11:53,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:53,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:11:53,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:11:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:11:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=12, Unknown=4, NotChecked=24, Total=56 [2021-11-25 19:11:53,915 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-11-25 19:11:57,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:57,004 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-11-25 19:11:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:11:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11 [2021-11-25 19:11:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:57,128 INFO L225 Difference]: With dead ends: 12 [2021-11-25 19:11:57,128 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:11:57,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=16, Invalid=12, Unknown=4, NotChecked=24, Total=56 [2021-11-25 19:11:57,129 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:57,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 17 Unchecked, 3.1s Time] [2021-11-25 19:11:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:11:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:11:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-25 19:11:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:11:57,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-11-25 19:11:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:57,132 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:11:57,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-11-25 19:11:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:11:57,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:11:57,134 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:11:57,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:11:57,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:11:57,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:12:08,882 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-25 19:12:08,884 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:260) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:259) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeIcfgHoareAnnotation(BasicCegarLoop.java:1184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop$CegarLoopResultBuilder.getResult(AbstractCegarLoop.java:832) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:350) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:237) ... 39 more [2021-11-25 19:12:08,886 INFO L158 Benchmark]: Toolchain (without parser) took 228874.67ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 37.2MB in the beginning and 44.7MB in the end (delta: -7.5MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-11-25 19:12:08,887 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:12:08,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.18ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 40.8MB in the end (delta: -3.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 19:12:08,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.27ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:12:08,888 INFO L158 Benchmark]: Boogie Preprocessor took 47.18ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 37.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:12:08,888 INFO L158 Benchmark]: RCFGBuilder took 3053.03ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 27.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:12:08,889 INFO L158 Benchmark]: TraceAbstraction took 225417.96ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 27.2MB in the beginning and 44.7MB in the end (delta: -17.5MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-11-25 19:12:08,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.18ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 40.8MB in the end (delta: -3.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.27ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 39.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.18ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 37.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3053.03ms. Allocated memory is still 58.7MB. Free memory was 37.7MB in the beginning and 27.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 225417.96ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 27.2MB in the beginning and 44.7MB in the end (delta: -17.5MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 19:12:08,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b233e1-ac15-4080-856b-b7876e293d21/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")