./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P --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 ec4125207afaf1b514f6960540fbcd04b5d06d11b290a09d0632548b03e12b1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:33:11,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:33:11,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:33:11,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:33:11,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:33:11,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:33:11,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:33:11,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:33:11,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:33:11,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:33:11,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:33:11,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:33:11,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:33:11,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:33:11,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:33:11,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:33:11,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:33:11,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:33:11,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:33:11,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:33:11,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:33:11,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:33:11,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:33:11,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:33:11,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:33:11,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:33:11,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:33:11,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:33:11,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:33:11,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:33:11,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:33:11,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:33:11,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:33:11,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:33:11,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:33:11,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:33:11,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:33:11,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:33:11,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:33:11,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:33:11,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:33:11,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:33:11,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:33:11,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:33:11,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:33:11,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:33:11,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:33:11,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:33:11,331 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:33:11,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:33:11,332 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:33:11,332 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:33:11,333 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:33:11,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:33:11,334 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:33:11,334 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:33:11,334 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:33:11,334 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:33:11,335 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:33:11,335 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:33:11,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:33:11,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:33:11,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:33:11,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:33:11,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:33:11,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:33:11,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:33:11,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:33:11,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:33:11,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:33:11,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:33:11,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:33:11,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:33:11,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:33:11,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:11,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:33:11,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:33:11,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:33:11,341 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:33:11,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:33:11,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:33:11,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:33:11,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:33:11,342 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_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4125207afaf1b514f6960540fbcd04b5d06d11b290a09d0632548b03e12b1f [2021-11-21 01:33:11,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:33:11,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:33:11,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:33:11,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:33:11,695 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:33:11,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-11-21 01:33:11,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/1d42da32f/56b81fb35b7e4e9b8a4e27d2aa0b129b/FLAG76fbdcbfc [2021-11-21 01:33:12,208 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:33:12,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-11-21 01:33:12,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/1d42da32f/56b81fb35b7e4e9b8a4e27d2aa0b129b/FLAG76fbdcbfc [2021-11-21 01:33:12,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/1d42da32f/56b81fb35b7e4e9b8a4e27d2aa0b129b [2021-11-21 01:33:12,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:33:12,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:33:12,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:12,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:33:12,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:33:12,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560ba831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12, skipping insertion in model container [2021-11-21 01:33:12,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:33:12,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:33:12,813 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_4bee3e39-2a8a-4910-b433-3d278c6a7b51/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-11-21 01:33:12,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:12,824 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:33:12,859 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_4bee3e39-2a8a-4910-b433-3d278c6a7b51/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-11-21 01:33:12,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:12,874 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:33:12,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12 WrapperNode [2021-11-21 01:33:12,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:12,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:12,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:33:12,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:33:12,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,922 INFO L137 Inliner]: procedures = 16, calls = 70, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 199 [2021-11-21 01:33:12,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:12,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:33:12,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:33:12,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:33:12,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:33:12,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:33:12,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:33:12,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:33:12,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (1/1) ... [2021-11-21 01:33:12,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:12,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:33:13,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:33:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-11-21 01:33:13,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-11-21 01:33:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:33:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:33:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:33:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 01:33:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:33:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-21 01:33:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:33:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:33:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:33:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:33:13,121 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:33:13,122 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:33:13,467 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:33:13,493 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:33:13,493 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-21 01:33:13,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:13 BoogieIcfgContainer [2021-11-21 01:33:13,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:33:13,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:33:13,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:33:13,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:33:13,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:33:12" (1/3) ... [2021-11-21 01:33:13,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678fd0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:33:13, skipping insertion in model container [2021-11-21 01:33:13,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:12" (2/3) ... [2021-11-21 01:33:13,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678fd0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:33:13, skipping insertion in model container [2021-11-21 01:33:13,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:13" (3/3) ... [2021-11-21 01:33:13,505 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2021-11-21 01:33:13,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:33:13,510 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:33:13,554 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:33:13,562 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 [2021-11-21 01:33:13,562 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:33:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 42 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:33:13,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:13,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:13,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1124281429, now seen corresponding path program 1 times [2021-11-21 01:33:13,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:13,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669548785] [2021-11-21 01:33:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:13,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:13,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:13,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669548785] [2021-11-21 01:33:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669548785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:13,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:33:13,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400060622] [2021-11-21 01:33:13,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:13,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:33:13,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:33:13,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:33:13,810 INFO L87 Difference]: Start difference. First operand has 46 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 42 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:33:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:13,863 INFO L93 Difference]: Finished difference Result 91 states and 145 transitions. [2021-11-21 01:33:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:33:13,866 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-21 01:33:13,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:13,875 INFO L225 Difference]: With dead ends: 91 [2021-11-21 01:33:13,875 INFO L226 Difference]: Without dead ends: 44 [2021-11-21 01:33:13,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:33:13,884 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:13,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:33:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-21 01:33:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-21 01:33:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-11-21 01:33:13,944 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 15 [2021-11-21 01:33:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:13,945 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-11-21 01:33:13,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:33:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-11-21 01:33:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:33:13,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:13,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:13,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:33:13,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 98762718, now seen corresponding path program 1 times [2021-11-21 01:33:13,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890166155] [2021-11-21 01:33:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:13,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:14,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:14,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890166155] [2021-11-21 01:33:14,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890166155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:14,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:14,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:14,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828392797] [2021-11-21 01:33:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:14,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:14,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:14,067 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:33:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:14,084 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-11-21 01:33:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-21 01:33:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:14,088 INFO L225 Difference]: With dead ends: 47 [2021-11-21 01:33:14,089 INFO L226 Difference]: Without dead ends: 44 [2021-11-21 01:33:14,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:14,092 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:14,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:33:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-21 01:33:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-21 01:33:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-11-21 01:33:14,106 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 17 [2021-11-21 01:33:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:14,110 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-11-21 01:33:14,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:33:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-11-21 01:33:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:33:14,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:14,114 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:14,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:33:14,115 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:14,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1729478613, now seen corresponding path program 1 times [2021-11-21 01:33:14,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:14,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654435670] [2021-11-21 01:33:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:14,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:33:14,226 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:33:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:33:14,309 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:33:14,309 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:33:14,310 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:33:14,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:33:14,315 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-21 01:33:14,318 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:33:14,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:33:14 BoogieIcfgContainer [2021-11-21 01:33:14,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:33:14,353 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:33:14,353 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:33:14,353 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:33:14,354 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:13" (3/4) ... [2021-11-21 01:33:14,357 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:33:14,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:33:14,358 INFO L158 Benchmark]: Toolchain (without parser) took 1781.03ms. Allocated memory is still 130.0MB. Free memory was 90.9MB in the beginning and 45.0MB in the end (delta: 45.9MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2021-11-21 01:33:14,358 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory was 108.3MB in the beginning and 108.2MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:33:14,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.63ms. Allocated memory is still 130.0MB. Free memory was 90.7MB in the beginning and 102.2MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:33:14,360 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.35ms. Allocated memory is still 130.0MB. Free memory was 102.2MB in the beginning and 100.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:33:14,360 INFO L158 Benchmark]: Boogie Preprocessor took 37.64ms. Allocated memory is still 130.0MB. Free memory was 100.2MB in the beginning and 98.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:33:14,361 INFO L158 Benchmark]: RCFGBuilder took 534.10ms. Allocated memory is still 130.0MB. Free memory was 98.5MB in the beginning and 81.3MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-21 01:33:14,361 INFO L158 Benchmark]: TraceAbstraction took 854.66ms. Allocated memory is still 130.0MB. Free memory was 80.6MB in the beginning and 45.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-11-21 01:33:14,362 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 130.0MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:33:14,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory was 108.3MB in the beginning and 108.2MB in the end (delta: 88.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.63ms. Allocated memory is still 130.0MB. Free memory was 90.7MB in the beginning and 102.2MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.35ms. Allocated memory is still 130.0MB. Free memory was 102.2MB in the beginning and 100.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.64ms. Allocated memory is still 130.0MB. Free memory was 100.2MB in the beginning and 98.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.10ms. Allocated memory is still 130.0MB. Free memory was 98.5MB in the beginning and 81.3MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 854.66ms. Allocated memory is still 130.0MB. Free memory was 80.6MB in the beginning and 45.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 130.0MB. Free memory is still 45.0MB. 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: 124]: 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 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; [L118] double x = 0.0 / 0.0; [L119] double iptr; [L120] CALL, EXPR modf_double(x, &iptr) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [\old(x)=4294967298, iptr={6:0}, iptr={6:0}, one_modf=1, x=4294967298] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4294967298, i0=-1, i1=0, iptr={6:0}, iptr={6:0}, one_modf=1, x=4294967298] [L31] COND TRUE j0 < 20 VAL [\old(x)=4294967298, i0=-1, i1=0, iptr={6:0}, iptr={6:0}, j0=-1, one_modf=1, x=4294967298] [L32] COND TRUE j0 < 0 VAL [\old(x)=4294967298, i0=-1, i1=0, iptr={6:0}, iptr={6:0}, j0=-1, one_modf=1, x=4294967298] [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; VAL [\old(x)=4294967298, \result=4294967298, i0=-1, i1=0, iptr={6:0}, iptr={6:0}, j0=-1, one_modf=1, x=4294967298] [L120] RET, EXPR modf_double(x, &iptr) [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) VAL [\read(iptr)=4294967297, iptr={6:0}, one_modf=1, res=4294967298, x=4294967298] [L123] CALL, EXPR isnan_double(iptr) VAL [\old(x)=4294967297, one_modf=1] [L17] return x != x; [L123] RET, EXPR isnan_double(iptr) VAL [\read(iptr)=4294967297, iptr={6:0}, isnan_double(iptr)=1, one_modf=1, res=4294967298, x=4294967298] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=4294967297, iptr={6:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, one_modf=1, res=4294967298, x=4294967298] [L123] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967298, one_modf=1] [L17] return x != x; [L123] RET, EXPR isnan_double(res) VAL [\read(iptr)=4294967297, iptr={6:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=4294967298, x=4294967298] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=4294967297, iptr={6:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=4294967298, x=4294967298] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] reach_error() VAL [iptr={6:0}, one_modf=1, res=4294967298, x=4294967298] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 97 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:33:14,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/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_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P --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 ec4125207afaf1b514f6960540fbcd04b5d06d11b290a09d0632548b03e12b1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:33:16,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:33:16,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:33:16,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:33:16,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:33:16,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:33:16,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:33:16,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:33:16,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:33:17,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:33:17,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:33:17,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:33:17,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:33:17,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:33:17,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:33:17,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:33:17,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:33:17,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:33:17,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:33:17,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:33:17,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:33:17,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:33:17,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:33:17,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:33:17,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:33:17,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:33:17,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:33:17,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:33:17,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:33:17,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:33:17,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:33:17,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:33:17,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:33:17,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:33:17,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:33:17,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:33:17,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:33:17,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:33:17,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:33:17,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:33:17,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:33:17,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:33:17,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:33:17,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:33:17,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:33:17,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:33:17,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:33:17,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:33:17,115 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:33:17,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:33:17,115 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:33:17,115 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:33:17,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:33:17,115 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:33:17,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:33:17,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:33:17,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:33:17,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:33:17,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:33:17,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:33:17,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:33:17,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:33:17,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:33:17,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:17,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:33:17,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:33:17,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:33:17,118 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:33:17,119 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:33:17,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:33:17,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:33:17,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:33:17,119 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_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4125207afaf1b514f6960540fbcd04b5d06d11b290a09d0632548b03e12b1f [2021-11-21 01:33:17,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:33:17,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:33:17,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:33:17,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:33:17,580 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:33:17,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-11-21 01:33:17,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/4db2f2e5e/71480175cb474a9ebe154bf40eb805d6/FLAGd2ba4241d [2021-11-21 01:33:18,227 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:33:18,228 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2021-11-21 01:33:18,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/4db2f2e5e/71480175cb474a9ebe154bf40eb805d6/FLAGd2ba4241d [2021-11-21 01:33:18,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/data/4db2f2e5e/71480175cb474a9ebe154bf40eb805d6 [2021-11-21 01:33:18,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:33:18,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:33:18,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:18,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:33:18,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:33:18,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:18,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbbffc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18, skipping insertion in model container [2021-11-21 01:33:18,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:18,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:33:18,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:33:18,821 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_4bee3e39-2a8a-4910-b433-3d278c6a7b51/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-11-21 01:33:18,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:18,857 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:33:18,918 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_4bee3e39-2a8a-4910-b433-3d278c6a7b51/sv-benchmarks/c/float-newlib/double_req_bl_1210.c[3091,3104] [2021-11-21 01:33:18,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:18,934 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:33:18,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18 WrapperNode [2021-11-21 01:33:18,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:18,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:18,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:33:18,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:33:18,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:18,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:18,984 INFO L137 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 198 [2021-11-21 01:33:18,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:18,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:33:18,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:33:18,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:33:18,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:18,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:19,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:19,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:19,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:19,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:19,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:19,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:33:19,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:33:19,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:33:19,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:33:19,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (1/1) ... [2021-11-21 01:33:19,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:19,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:19,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:33:19,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:33:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-11-21 01:33:19,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-11-21 01:33:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:33:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-21 01:33:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-21 01:33:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:33:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:33:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:33:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:33:19,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:33:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:33:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:33:19,213 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:33:19,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:33:21,758 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:33:21,765 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:33:21,765 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-21 01:33:21,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:21 BoogieIcfgContainer [2021-11-21 01:33:21,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:33:21,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:33:21,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:33:21,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:33:21,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:33:18" (1/3) ... [2021-11-21 01:33:21,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3f21f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:33:21, skipping insertion in model container [2021-11-21 01:33:21,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:18" (2/3) ... [2021-11-21 01:33:21,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3f21f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:33:21, skipping insertion in model container [2021-11-21 01:33:21,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:21" (3/3) ... [2021-11-21 01:33:21,776 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2021-11-21 01:33:21,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:33:21,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:33:21,827 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:33:21,833 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 [2021-11-21 01:33:21,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:33:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:33:21,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:21,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:21,860 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:21,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash -542918343, now seen corresponding path program 1 times [2021-11-21 01:33:21,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:33:21,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987840617] [2021-11-21 01:33:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:21,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:33:21,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:33:21,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:33:21,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:33:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:22,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:33:22,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:22,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:33:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:22,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:33:22,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987840617] [2021-11-21 01:33:22,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987840617] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:22,177 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:22,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:33:22,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153102464] [2021-11-21 01:33:22,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:22,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:33:22,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:33:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:33:22,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:33:22,214 INFO L87 Difference]: Start difference. First operand has 49 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:33:22,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:22,237 INFO L93 Difference]: Finished difference Result 96 states and 150 transitions. [2021-11-21 01:33:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:33:22,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-21 01:33:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:22,249 INFO L225 Difference]: With dead ends: 96 [2021-11-21 01:33:22,250 INFO L226 Difference]: Without dead ends: 46 [2021-11-21 01:33:22,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:33:22,262 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:22,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:33:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-21 01:33:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-21 01:33:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-11-21 01:33:22,315 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 17 [2021-11-21 01:33:22,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:22,317 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-11-21 01:33:22,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:33:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-11-21 01:33:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:33:22,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:22,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:22,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:22,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:33:22,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash 634117776, now seen corresponding path program 1 times [2021-11-21 01:33:22,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:33:22,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673420478] [2021-11-21 01:33:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:22,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:33:22,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:33:22,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:33:22,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:33:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:22,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:33:22,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:23,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:33:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:23,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:33:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673420478] [2021-11-21 01:33:23,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673420478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:23,386 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:23,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-21 01:33:23,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217654733] [2021-11-21 01:33:23,387 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:23,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:33:23,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:33:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:33:23,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:33:23,390 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:33:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:23,533 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-11-21 01:33:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:33:23,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-21 01:33:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:23,536 INFO L225 Difference]: With dead ends: 67 [2021-11-21 01:33:23,536 INFO L226 Difference]: Without dead ends: 42 [2021-11-21 01:33:23,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:33:23,539 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:23,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 183 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2021-11-21 01:33:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-21 01:33:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-21 01:33:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-11-21 01:33:23,548 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2021-11-21 01:33:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:23,548 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-11-21 01:33:23,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:33:23,549 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-11-21 01:33:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:33:23,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:23,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:23,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:33:23,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:33:23,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:23,765 INFO L85 PathProgramCache]: Analyzing trace with hash -992387949, now seen corresponding path program 1 times [2021-11-21 01:33:23,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:33:23,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045636320] [2021-11-21 01:33:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:23,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:33:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:33:23,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:33:23,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:33:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:23,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:33:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:24,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:33:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:24,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:33:24,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045636320] [2021-11-21 01:33:24,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045636320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:24,061 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:24,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:33:24,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245589624] [2021-11-21 01:33:24,062 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:24,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:24,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:33:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:24,064 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:33:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:24,103 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-11-21 01:33:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:24,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-21 01:33:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:24,109 INFO L225 Difference]: With dead ends: 36 [2021-11-21 01:33:24,109 INFO L226 Difference]: Without dead ends: 33 [2021-11-21 01:33:24,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:24,113 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:24,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:33:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-21 01:33:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-21 01:33:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-21 01:33:24,122 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2021-11-21 01:33:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:24,123 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-21 01:33:24,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:33:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-21 01:33:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 01:33:24,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:24,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:24,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:24,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:33:24,336 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1527705995, now seen corresponding path program 1 times [2021-11-21 01:33:24,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:33:24,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781795954] [2021-11-21 01:33:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:24,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:33:24,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:33:24,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:33:24,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:33:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:24,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:33:24,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:24,757 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:33:24,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2021-11-21 01:33:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:33:25,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:33:25,800 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-21 01:33:25,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 34 [2021-11-21 01:33:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:33:29,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:33:29,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781795954] [2021-11-21 01:33:29,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781795954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:29,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:29,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-21 01:33:29,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72068630] [2021-11-21 01:33:29,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:29,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 01:33:29,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:33:29,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 01:33:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:33:29,263 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:33:30,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:30,729 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2021-11-21 01:33:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:33:30,729 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-21 01:33:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:30,730 INFO L225 Difference]: With dead ends: 45 [2021-11-21 01:33:30,730 INFO L226 Difference]: Without dead ends: 33 [2021-11-21 01:33:30,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:33:30,732 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 49 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:30,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 232 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 27 Unchecked, 0.9s Time] [2021-11-21 01:33:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-21 01:33:30,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-21 01:33:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:33:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-11-21 01:33:30,738 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 25 [2021-11-21 01:33:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:30,739 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-11-21 01:33:30,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 12 states have internal predecessors, (38), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:33:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-11-21 01:33:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:33:30,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:30,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:30,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:30,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:33:30,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:30,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1271287075, now seen corresponding path program 1 times [2021-11-21 01:33:30,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:33:30,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605757070] [2021-11-21 01:33:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:30,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:33:30,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:33:30,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:33:30,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:33:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:33:31,306 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:33:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:33:31,697 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 01:33:31,697 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:33:31,698 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:33:31,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:31,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:33:31,903 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-21 01:33:31,906 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:33:31,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:33:31 BoogieIcfgContainer [2021-11-21 01:33:31,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:33:31,947 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:33:31,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:33:31,947 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:33:31,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:33:21" (3/4) ... [2021-11-21 01:33:31,949 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:33:32,000 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:33:32,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:33:32,001 INFO L158 Benchmark]: Toolchain (without parser) took 13415.00ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 46.2MB in the beginning and 43.0MB in the end (delta: 3.3MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2021-11-21 01:33:32,002 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:33:32,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.64ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 47.9MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:33:32,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.93ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 45.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:33:32,003 INFO L158 Benchmark]: Boogie Preprocessor took 47.04ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 43.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:33:32,003 INFO L158 Benchmark]: RCFGBuilder took 2733.86ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 43.7MB in the beginning and 68.1MB in the end (delta: -24.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-21 01:33:32,004 INFO L158 Benchmark]: TraceAbstraction took 10176.91ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 45.9MB in the end (delta: 21.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2021-11-21 01:33:32,004 INFO L158 Benchmark]: Witness Printer took 54.19ms. Allocated memory is still 90.2MB. Free memory was 45.9MB in the beginning and 43.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 01:33:32,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 67.1MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.64ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 47.9MB in the end (delta: -1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.93ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 45.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.04ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 43.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2733.86ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 43.7MB in the beginning and 68.1MB in the end (delta: -24.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10176.91ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 45.9MB in the end (delta: 21.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * Witness Printer took 54.19ms. Allocated memory is still 90.2MB. Free memory was 45.9MB in the beginning and 43.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 124]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] static const double one_modf = 1.0; VAL [one_modf=1.0] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L120] CALL, EXPR modf_double(x, &iptr) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [\old(x)=NaN, iptr={-2147483645:0}, iptr={-2147483645:0}, one_modf=1.0, x=NaN] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=NaN, i0=2146435072, i1=-2147483648, iptr={-2147483645:0}, iptr={-2147483645:0}, j0=1024, one_modf=1.0, x=NaN] [L31] COND FALSE !(j0 < 20) VAL [\old(x)=NaN, i0=2146435072, i1=-2147483648, iptr={-2147483645:0}, iptr={-2147483645:0}, j0=1024, one_modf=1.0, x=NaN] [L67] COND TRUE j0 > 51 [L68] __uint32_t high; [L69] *iptr = x * one_modf VAL [\old(x)=NaN, i0=2146435072, i1=-2147483648, iptr={-2147483645:0}, iptr={-2147483645:0}, j0=1024, one_modf=1.0, x=NaN] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (high) = gh_u.parts.msw [L76] ieee_double_shape_type iw_u; [L77] iw_u.parts.msw = (high & 0x80000000) [L78] iw_u.parts.lsw = (0) [L79] EXPR iw_u.value [L79] (x) = iw_u.value [L81] return x; VAL [\old(x)=NaN, \result=0.0, high=2146435072, i0=2146435072, i1=-2147483648, iptr={-2147483645:0}, iptr={-2147483645:0}, j0=1024, one_modf=1.0, x=0.0] [L120] RET, EXPR modf_double(x, &iptr) [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) VAL [\read(iptr)=NaN, iptr={-2147483645:0}, one_modf=1.0, res=0.0, x=NaN] [L123] CALL, EXPR isnan_double(iptr) VAL [\old(x)=NaN, one_modf=1.0] [L17] return x != x; VAL [\old(x)=NaN, \result=1, one_modf=1.0, x=NaN] [L123] RET, EXPR isnan_double(iptr) VAL [\read(iptr)=NaN, iptr={-2147483645:0}, isnan_double(iptr)=1, one_modf=1.0, res=0.0, x=NaN] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=NaN, iptr={-2147483645:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, one_modf=1.0, res=0.0, x=NaN] [L123] CALL, EXPR isnan_double(res) VAL [\old(x)=0.0, one_modf=1.0] [L17] return x != x; VAL [\old(x)=0.0, \result=0, one_modf=1.0, x=0.0] [L123] RET, EXPR isnan_double(res) VAL [\read(iptr)=NaN, iptr={-2147483645:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1.0, res=0.0, x=NaN] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=NaN, iptr={-2147483645:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1.0, res=0.0, x=NaN] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L124] reach_error() VAL [iptr={-2147483645:0}, one_modf=1.0, res=0.0, x=NaN] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 536 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53 IncrementalHoareTripleChecker+Unchecked, 378 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 158 mSDtfsCounter, 98 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 154 ConstructedInterpolants, 19 QuantifiedInterpolants, 822 SizeOfPredicates, 22 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-21 01:33:32,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bee3e39-2a8a-4910-b433-3d278c6a7b51/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE