./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:15,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:15,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:15,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:15,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:15,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:15,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:15,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:15,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:15,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:15,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:15,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:15,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:15,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:15,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:15,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:15,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:15,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:15,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:15,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:15,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:15,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:15,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:15,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:15,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:15,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:15,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:15,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:15,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:15,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:15,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:15,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:15,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:15,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:15,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:15,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:15,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:15,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:15,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:15,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:15,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:15,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:53:15,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:15,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:15,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:15,279 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:15,279 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:15,280 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:15,280 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:15,280 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:15,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:15,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:15,282 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:15,282 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:15,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:15,283 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:15,283 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:15,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:15,285 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:53:15,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:15,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:53:15,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:15,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:15,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:15,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:15,286 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:15,287 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:53:15,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:15,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:15,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:15,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:15,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:15,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:15,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:15,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:15,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:15,289 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:15,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:15,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:15,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:15,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:15,290 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_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2021-11-07 00:53:15,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:15,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:15,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:15,548 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:15,549 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:15,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-11-07 00:53:15,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/87a2eb868/392a0ba717074fd986906a29c892a25b/FLAG495735ae3 [2021-11-07 00:53:16,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:16,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-11-07 00:53:16,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/87a2eb868/392a0ba717074fd986906a29c892a25b/FLAG495735ae3 [2021-11-07 00:53:16,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/87a2eb868/392a0ba717074fd986906a29c892a25b [2021-11-07 00:53:16,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:16,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:16,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:16,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:16,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:16,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b34bc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16, skipping insertion in model container [2021-11-07 00:53:16,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:16,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:16,781 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-11-07 00:53:16,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:16,834 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:16,848 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-11-07 00:53:16,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:16,892 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:16,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16 WrapperNode [2021-11-07 00:53:16,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:16,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:16,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:16,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:16,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:16,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:16,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:16,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:16,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:16,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:16,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:16,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:16,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:16,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (1/1) ... [2021-11-07 00:53:17,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:17,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:17,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:17,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:53:17,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:17,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:17,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:53:17,506 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 00:53:17,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:17 BoogieIcfgContainer [2021-11-07 00:53:17,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:53:17,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:53:17,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:53:17,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:53:17,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:16" (1/3) ... [2021-11-07 00:53:17,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb9ad01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:17, skipping insertion in model container [2021-11-07 00:53:17,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:16" (2/3) ... [2021-11-07 00:53:17,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb9ad01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:17, skipping insertion in model container [2021-11-07 00:53:17,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:17" (3/3) ... [2021-11-07 00:53:17,522 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2021-11-07 00:53:17,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:53:17,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:53:17,585 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:53:17,592 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:53:17,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:53:17,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 00:53:17,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:17,616 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 00:53:17,616 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash 87119840, now seen corresponding path program 1 times [2021-11-07 00:53:17,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:17,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204804332] [2021-11-07 00:53:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:17,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:53:17,779 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 00:53:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:53:17,860 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 00:53:17,864 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 00:53:17,865 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:53:17,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:53:17,870 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 00:53:17,873 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:53:17,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:53:17 BoogieIcfgContainer [2021-11-07 00:53:17,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:53:17,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:53:17,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:53:17,904 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:53:17,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:17" (3/4) ... [2021-11-07 00:53:17,907 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 00:53:17,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:53:17,911 INFO L168 Benchmark]: Toolchain (without parser) took 1410.25 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 82.8 MB in the beginning and 81.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:17,912 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:17,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.31 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 82.6 MB in the beginning and 112.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:17,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.08 ms. Allocated memory is still 138.4 MB. Free memory was 112.9 MB in the beginning and 111.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:17,916 INFO L168 Benchmark]: Boogie Preprocessor took 46.79 ms. Allocated memory is still 138.4 MB. Free memory was 111.1 MB in the beginning and 110.1 MB in the end (delta: 988.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:17,917 INFO L168 Benchmark]: RCFGBuilder took 520.99 ms. Allocated memory is still 138.4 MB. Free memory was 110.1 MB in the beginning and 96.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:17,923 INFO L168 Benchmark]: TraceAbstraction took 390.75 ms. Allocated memory is still 138.4 MB. Free memory was 96.1 MB in the beginning and 82.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:17,924 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 138.4 MB. Free memory was 82.1 MB in the beginning and 81.8 MB in the end (delta: 351.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:17,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.31 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 82.6 MB in the beginning and 112.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.08 ms. Allocated memory is still 138.4 MB. Free memory was 112.9 MB in the beginning and 111.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.79 ms. Allocated memory is still 138.4 MB. Free memory was 111.1 MB in the beginning and 110.1 MB in the end (delta: 988.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 520.99 ms. Allocated memory is still 138.4 MB. Free memory was 110.1 MB in the beginning and 96.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 390.75 ms. Allocated memory is still 138.4 MB. Free memory was 96.1 MB in the beginning and 82.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 138.4 MB. Free memory was 82.1 MB in the beginning and 81.8 MB in the end (delta: 351.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 59. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. VAL [_EPS=1/1000000] [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L20] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 00:53:17,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:20,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:20,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:20,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:20,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:20,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:20,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:20,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:20,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:20,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:20,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:20,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:20,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:20,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:20,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:20,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:20,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:20,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:20,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:20,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:20,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:20,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:20,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:20,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:20,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:20,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:20,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:20,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:20,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:20,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:20,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:20,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:20,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:20,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:20,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:20,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:20,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:20,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:20,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:20,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:20,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:20,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:53:20,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:20,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:20,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:20,584 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:20,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:20,585 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:20,585 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:20,585 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:20,586 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:20,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:20,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:53:20,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:53:20,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:20,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:20,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:20,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:20,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:20,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:20,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:20,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:53:20,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:20,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:20,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:20,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:20,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:20,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:20,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:20,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:20,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:20,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:20,593 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:20,593 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:20,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:20,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:20,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:20,595 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_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a18ef05fc68655f6745bf4a502e0079c3ee8f2ad8ce0a20fedaec28a3ae221 [2021-11-07 00:53:20,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:20,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:21,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:21,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:21,003 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:21,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-11-07 00:53:21,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/2f9676bf8/004623a0077d481cb8e89a3d0afeda27/FLAG914fcaabe [2021-11-07 00:53:21,602 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:21,603 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2021-11-07 00:53:21,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/2f9676bf8/004623a0077d481cb8e89a3d0afeda27/FLAG914fcaabe [2021-11-07 00:53:21,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/data/2f9676bf8/004623a0077d481cb8e89a3d0afeda27 [2021-11-07 00:53:21,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:21,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:21,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:21,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:21,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:21,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:21" (1/1) ... [2021-11-07 00:53:21,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677c5963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:21, skipping insertion in model container [2021-11-07 00:53:21,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:21" (1/1) ... [2021-11-07 00:53:22,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:22,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:22,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-11-07 00:53:22,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:22,199 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:22,212 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c[855,868] [2021-11-07 00:53:22,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:22,258 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:22,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22 WrapperNode [2021-11-07 00:53:22,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:22,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:22,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:22,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:22,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:22,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:22,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:22,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:22,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:22,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:22,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:22,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:22,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (1/1) ... [2021-11-07 00:53:22,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:22,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:22,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:22,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:22,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:31,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:53:31,191 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 00:53:31,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:31 BoogieIcfgContainer [2021-11-07 00:53:31,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:53:31,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:53:31,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:53:31,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:53:31,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:21" (1/3) ... [2021-11-07 00:53:31,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e61318d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:31, skipping insertion in model container [2021-11-07 00:53:31,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:22" (2/3) ... [2021-11-07 00:53:31,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e61318d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:31, skipping insertion in model container [2021-11-07 00:53:31,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:31" (3/3) ... [2021-11-07 00:53:31,217 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2021-11-07 00:53:31,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:53:31,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:53:31,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:53:31,286 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:53:31,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:53:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 00:53:31,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:31,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:31,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:31,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-11-07 00:53:31,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:31,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893964611] [2021-11-07 00:53:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:31,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:31,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:31,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:31,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:53:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:33,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:53:33,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:33,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:33,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:33,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893964611] [2021-11-07 00:53:33,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893964611] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:33,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:33,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:53:33,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856457741] [2021-11-07 00:53:33,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:53:33,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:53:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:53:33,404 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:33,418 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-11-07 00:53:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:53:33,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 00:53:33,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:33,427 INFO L225 Difference]: With dead ends: 34 [2021-11-07 00:53:33,427 INFO L226 Difference]: Without dead ends: 14 [2021-11-07 00:53:33,430 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:53:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-07 00:53:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-07 00:53:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-07 00:53:33,460 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-07 00:53:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:33,460 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-07 00:53:33,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-07 00:53:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 00:53:33,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:33,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:33,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:33,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:33,677 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:33,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-11-07 00:53:33,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:33,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834856507] [2021-11-07 00:53:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:33,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:33,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:33,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:33,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:53:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:35,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:53:35,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:36,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:46,643 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from false [2021-11-07 00:53:48,720 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from true [2021-11-07 00:54:04,720 WARN L207 SmtUtils]: Spent 7.01 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-11-07 00:54:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:12,058 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:12,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834856507] [2021-11-07 00:54:12,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834856507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:12,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:12,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 00:54:12,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297394661] [2021-11-07 00:54:12,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:12,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-11-07 00:54:12,064 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:14,679 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-07 00:54:39,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:39,222 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-11-07 00:54:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:54:39,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 00:54:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:39,300 INFO L225 Difference]: With dead ends: 32 [2021-11-07 00:54:39,300 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 00:54:39,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-11-07 00:54:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 00:54:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-07 00:54:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-07 00:54:39,307 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-11-07 00:54:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:39,308 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-07 00:54:39,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-07 00:54:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 00:54:39,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:39,309 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:39,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:39,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:39,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:39,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-11-07 00:54:39,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:39,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517849175] [2021-11-07 00:54:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:39,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:39,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:39,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:39,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:54:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:42,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 00:54:42,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:01,402 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0)))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 00:55:37,443 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from false [2021-11-07 00:55:39,516 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from true [2021-11-07 00:56:06,548 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from false [2021-11-07 00:56:08,621 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from true [2021-11-07 00:56:14,410 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:56:20,069 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 00:56:25,780 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:56:31,484 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:56:37,236 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 00:56:42,511 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 00:56:44,957 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse2 .cse3))) (not (fp.lt .cse1 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 00:56:50,745 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:56:58,963 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:57:04,772 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:57:10,589 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 00:57:16,344 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:57:22,097 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 00:57:27,804 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 00:57:33,547 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 00:57:41,708 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:57:49,945 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:57:55,728 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:58:01,461 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 00:58:07,143 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:58:12,416 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 00:58:18,131 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 00:58:26,298 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:58:32,069 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:58:37,853 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 00:58:43,631 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:58:48,992 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 00:58:54,735 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 00:59:00,461 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:59:06,183 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 00:59:11,892 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:59:17,649 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 00:59:23,403 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 00:59:29,127 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 00:59:34,957 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:59:40,702 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 00:59:46,451 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 00:59:52,227 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 00:59:57,959 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:00:03,692 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:00:09,449 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 01:00:15,251 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 01:00:20,954 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:00:26,720 WARN L207 SmtUtils]: Spent 5.76 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:00:29,161 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from false [2021-11-07 01:00:31,468 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from true [2021-11-07 01:00:39,656 WARN L207 SmtUtils]: Spent 5.74 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:00:47,757 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:00:53,489 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:00:59,190 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:01:04,891 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:01:10,189 WARN L207 SmtUtils]: Spent 5.30 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:01:15,974 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:01:24,145 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:01:29,899 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:01:35,674 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:01:41,401 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:01:46,812 WARN L207 SmtUtils]: Spent 5.41 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:01:52,562 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:01:58,282 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:03,999 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:02:09,733 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:15,452 WARN L207 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:02:21,126 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:02:26,814 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:02:29,246 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from false [2021-11-07 01:02:30,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 01:02:30,483 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 01:02:30,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:02:30,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517849175] [2021-11-07 01:02:30,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-07 01:02:30,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [780212315] [2021-11-07 01:02:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:30,485 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:02:30,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:02:30,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:02:30,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:02:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:35,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:02:35,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:35,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 01:02:35,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250836245] [2021-11-07 01:02:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:35,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:35,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:35,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:35,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:03:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:39,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:03:39,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:39,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 01:03:39,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:39,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 01:03:39,137 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-07 01:03:39,137 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 01:03:39,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:03:39,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:39,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:39,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:03:39,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b48f17db-d45a-4d58-b580-64c63c29b36e/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:03:39,746 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:03:39,749 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:03:39,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:03:39 BoogieIcfgContainer [2021-11-07 01:03:39,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:03:39,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:03:39,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:03:39,762 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:03:39,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:31" (3/4) ... [2021-11-07 01:03:39,765 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:03:39,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:03:39,767 INFO L168 Benchmark]: Toolchain (without parser) took 617776.03 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.7 MB in the beginning and 35.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:39,767 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:39,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.42 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 45.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:39,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.05 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:39,769 INFO L168 Benchmark]: Boogie Preprocessor took 46.65 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 42.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:39,769 INFO L168 Benchmark]: RCFGBuilder took 8816.51 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 32.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:39,770 INFO L168 Benchmark]: TraceAbstraction took 608565.49 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 36.0 MB in the end (delta: -4.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:39,770 INFO L168 Benchmark]: Witness Printer took 4.15 ms. Allocated memory is still 62.9 MB. Free memory was 36.0 MB in the beginning and 35.7 MB in the end (delta: 349.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:39,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 50.3 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.42 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 45.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.05 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.65 ms. Allocated memory is still 62.9 MB. Free memory was 44.0 MB in the beginning and 42.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 8816.51 ms. Allocated memory is still 62.9 MB. Free memory was 42.5 MB in the beginning and 32.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 608565.49 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 36.0 MB in the end (delta: -4.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.15 ms. Allocated memory is still 62.9 MB. Free memory was 36.0 MB in the beginning and 35.7 MB in the end (delta: 349.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] double _EPS = 1e-6; [L49] double d, dd, r; [L50] double epsilon = 1e-8; [L52] d = 1. [L52] COND TRUE d <= 20. [L54] dd = __VERIFIER_nondet_double() [L18] COND FALSE !(!cond) [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; [L28] COND FALSE !(Input <= 1.0) [L28] xn = 1.0/Input [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 [L35] COND FALSE !(\read(cond)) [L44] return 1.0 / xnp1; [L57] r = SqrtR(dd) [L20] COND TRUE !(cond) [L20] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 608.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 27.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 0 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 24.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 504.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN