./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:36:03,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:36:03,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:36:03,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:36:03,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:36:03,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:36:03,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:36:03,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:36:03,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:36:03,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:36:03,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:36:03,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:36:03,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:36:03,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:36:03,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:36:03,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:36:03,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:36:03,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:36:03,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:36:03,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:36:03,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:36:03,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:36:03,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:36:03,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:36:03,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:36:03,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:36:03,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:36:03,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:36:03,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:36:03,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:36:03,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:36:03,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:36:03,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:36:03,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:36:03,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:36:03,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:36:03,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:36:03,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:36:03,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:36:03,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:36:03,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:36:03,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 19:36:03,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:36:03,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:36:03,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:36:03,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:36:03,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:36:03,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:36:03,449 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:36:03,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:36:03,450 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:36:03,450 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:36:03,451 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:36:03,451 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:36:03,452 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:36:03,452 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:36:03,452 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:36:03,452 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:36:03,453 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:36:03,453 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:36:03,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:36:03,454 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:36:03,454 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:36:03,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:36:03,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:36:03,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:36:03,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:36:03,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:36:03,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:36:03,456 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 19:36:03,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:36:03,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:36:03,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:36:03,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:36:03,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:36:03,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:36:03,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:36:03,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:36:03,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:36:03,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:36:03,459 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:36:03,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:36:03,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:36:03,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:36:03,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:36:03,462 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_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2021-11-25 19:36:03,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:36:03,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:36:03,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:36:03,830 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:36:03,831 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:36:03,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-25 19:36:03,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/data/9434b755c/5e3d70535bb3454c871d6d2855a1151d/FLAGf108b74ff [2021-11-25 19:36:04,375 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:36:04,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-25 19:36:04,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/data/9434b755c/5e3d70535bb3454c871d6d2855a1151d/FLAGf108b74ff [2021-11-25 19:36:04,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/data/9434b755c/5e3d70535bb3454c871d6d2855a1151d [2021-11-25 19:36:04,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:36:04,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:36:04,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:36:04,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:36:04,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:36:04,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:36:04" (1/1) ... [2021-11-25 19:36:04,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7124ca42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:04, skipping insertion in model container [2021-11-25 19:36:04,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:36:04" (1/1) ... [2021-11-25 19:36:04,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:36:04,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:36:05,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-25 19:36:05,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:36:05,110 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:36:05,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-25 19:36:05,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:36:05,169 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:36:05,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05 WrapperNode [2021-11-25 19:36:05,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:36:05,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:36:05,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:36:05,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:36:05,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,215 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 158 [2021-11-25 19:36:05,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:36:05,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:36:05,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:36:05,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:36:05,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:36:05,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:36:05,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:36:05,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:36:05,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (1/1) ... [2021-11-25 19:36:05,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:36:05,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:05,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:36:05,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:36:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:36:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:36:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-25 19:36:05,355 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-25 19:36:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:36:05,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:36:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:36:05,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:36:05,460 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:36:05,461 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:36:05,951 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:36:06,111 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:36:06,111 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:36:06,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:36:06 BoogieIcfgContainer [2021-11-25 19:36:06,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:36:06,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:36:06,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:36:06,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:36:06,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:36:04" (1/3) ... [2021-11-25 19:36:06,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46de03ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:36:06, skipping insertion in model container [2021-11-25 19:36:06,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:36:05" (2/3) ... [2021-11-25 19:36:06,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46de03ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:36:06, skipping insertion in model container [2021-11-25 19:36:06,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:36:06" (3/3) ... [2021-11-25 19:36:06,135 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2021-11-25 19:36:06,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:36:06,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-25 19:36:06,208 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:36:06,219 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:36:06,219 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-25 19:36:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.711111111111111) internal successors, (77), 63 states have internal predecessors, (77), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-25 19:36:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:36:06,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:06,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:06,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:06,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1187746787, now seen corresponding path program 1 times [2021-11-25 19:36:06,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:06,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43652075] [2021-11-25 19:36:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:06,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:06,458 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:06,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43652075] [2021-11-25 19:36:06,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43652075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:06,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:06,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:36:06,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917651199] [2021-11-25 19:36:06,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:06,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:36:06,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:36:06,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:36:06,500 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.711111111111111) internal successors, (77), 63 states have internal predecessors, (77), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:06,601 INFO L93 Difference]: Finished difference Result 140 states and 186 transitions. [2021-11-25 19:36:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:36:06,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:36:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:06,617 INFO L225 Difference]: With dead ends: 140 [2021-11-25 19:36:06,618 INFO L226 Difference]: Without dead ends: 58 [2021-11-25 19:36:06,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:36:06,630 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:06,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:06,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-25 19:36:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-25 19:36:06,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 50 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-11-25 19:36:06,693 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 8 [2021-11-25 19:36:06,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:06,694 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-11-25 19:36:06,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:06,695 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-11-25 19:36:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:36:06,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:06,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:06,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:36:06,698 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:06,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1188917732, now seen corresponding path program 1 times [2021-11-25 19:36:06,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:06,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546681523] [2021-11-25 19:36:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:06,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:06,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:06,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546681523] [2021-11-25 19:36:06,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546681523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:06,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:06,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:06,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643482554] [2021-11-25 19:36:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:06,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:36:06,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:36:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:36:06,839 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:06,989 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2021-11-25 19:36:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:36:06,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:36:06,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:06,994 INFO L225 Difference]: With dead ends: 152 [2021-11-25 19:36:06,995 INFO L226 Difference]: Without dead ends: 96 [2021-11-25 19:36:06,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:36:07,002 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:07,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 153 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-25 19:36:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-11-25 19:36:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.5) internal successors, (99), 79 states have internal predecessors, (99), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2021-11-25 19:36:07,033 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 8 [2021-11-25 19:36:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:07,035 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2021-11-25 19:36:07,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2021-11-25 19:36:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:36:07,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:07,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:07,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:36:07,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash 718339619, now seen corresponding path program 1 times [2021-11-25 19:36:07,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:07,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369185671] [2021-11-25 19:36:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:07,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:07,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:07,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369185671] [2021-11-25 19:36:07,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369185671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:07,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:07,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:36:07,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6549501] [2021-11-25 19:36:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:07,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:36:07,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:36:07,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:36:07,147 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:07,282 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2021-11-25 19:36:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:36:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 19:36:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:07,294 INFO L225 Difference]: With dead ends: 104 [2021-11-25 19:36:07,294 INFO L226 Difference]: Without dead ends: 102 [2021-11-25 19:36:07,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:36:07,298 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:07,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 204 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-25 19:36:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2021-11-25 19:36:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 81 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2021-11-25 19:36:07,314 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 12 [2021-11-25 19:36:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:07,315 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-11-25 19:36:07,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2021-11-25 19:36:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:36:07,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:07,317 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:07,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:36:07,317 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:07,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash -119909001, now seen corresponding path program 1 times [2021-11-25 19:36:07,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314563670] [2021-11-25 19:36:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:07,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:07,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314563670] [2021-11-25 19:36:07,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314563670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:07,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:07,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:36:07,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652175064] [2021-11-25 19:36:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:07,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:36:07,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:36:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:36:07,401 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:07,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:07,517 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2021-11-25 19:36:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:36:07,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-25 19:36:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:07,520 INFO L225 Difference]: With dead ends: 127 [2021-11-25 19:36:07,520 INFO L226 Difference]: Without dead ends: 124 [2021-11-25 19:36:07,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:36:07,531 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 81 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:07,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 163 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-25 19:36:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2021-11-25 19:36:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 101 states have internal predecessors, (130), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2021-11-25 19:36:07,558 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 14 [2021-11-25 19:36:07,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:07,559 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2021-11-25 19:36:07,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:07,559 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2021-11-25 19:36:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:36:07,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:07,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:07,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:36:07,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:07,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash 793691810, now seen corresponding path program 1 times [2021-11-25 19:36:07,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:07,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072601636] [2021-11-25 19:36:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:07,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:07,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072601636] [2021-11-25 19:36:07,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072601636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:07,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:07,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:36:07,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489681501] [2021-11-25 19:36:07,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:07,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:36:07,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:36:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:36:07,628 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:07,759 INFO L93 Difference]: Finished difference Result 209 states and 257 transitions. [2021-11-25 19:36:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:36:07,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 19:36:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:07,764 INFO L225 Difference]: With dead ends: 209 [2021-11-25 19:36:07,764 INFO L226 Difference]: Without dead ends: 130 [2021-11-25 19:36:07,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:36:07,769 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 76 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:07,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 206 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:07,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-25 19:36:07,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2021-11-25 19:36:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 104 states have internal predecessors, (133), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2021-11-25 19:36:07,792 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 13 [2021-11-25 19:36:07,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:07,792 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2021-11-25 19:36:07,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:07,792 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2021-11-25 19:36:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:36:07,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:07,799 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:07,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:36:07,800 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash 577788322, now seen corresponding path program 1 times [2021-11-25 19:36:07,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:07,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700638058] [2021-11-25 19:36:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:07,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:36:07,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:07,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700638058] [2021-11-25 19:36:07,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700638058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:07,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:07,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:36:07,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431222796] [2021-11-25 19:36:07,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:07,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:36:07,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:36:07,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:07,864 INFO L87 Difference]: Start difference. First operand 114 states and 143 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:07,896 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2021-11-25 19:36:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:36:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-25 19:36:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:07,899 INFO L225 Difference]: With dead ends: 120 [2021-11-25 19:36:07,899 INFO L226 Difference]: Without dead ends: 119 [2021-11-25 19:36:07,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:36:07,901 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:07,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:36:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-25 19:36:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2021-11-25 19:36:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 101 states have internal predecessors, (128), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2021-11-25 19:36:07,928 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 15 [2021-11-25 19:36:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:07,929 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2021-11-25 19:36:07,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2021-11-25 19:36:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:36:07,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:07,930 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:07,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:36:07,931 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1510957708, now seen corresponding path program 1 times [2021-11-25 19:36:07,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:07,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726381634] [2021-11-25 19:36:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:07,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:07,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726381634] [2021-11-25 19:36:07,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726381634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566731285] [2021-11-25 19:36:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:07,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:07,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:07,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:36:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:08,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:36:08,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:08,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:36:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566731285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:08,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:36:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-25 19:36:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116289284] [2021-11-25 19:36:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:08,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:36:08,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:36:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:36:08,177 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:08,224 INFO L93 Difference]: Finished difference Result 133 states and 165 transitions. [2021-11-25 19:36:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:36:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-25 19:36:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:08,227 INFO L225 Difference]: With dead ends: 133 [2021-11-25 19:36:08,227 INFO L226 Difference]: Without dead ends: 132 [2021-11-25 19:36:08,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:36:08,229 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:08,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 117 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:36:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-25 19:36:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-11-25 19:36:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 99 states have internal predecessors, (124), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-11-25 19:36:08,244 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 14 [2021-11-25 19:36:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:08,244 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-11-25 19:36:08,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:36:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-11-25 19:36:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:36:08,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:08,248 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:08,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:08,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:08,462 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:08,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1619016927, now seen corresponding path program 1 times [2021-11-25 19:36:08,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:08,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599407398] [2021-11-25 19:36:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:08,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:36:08,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:08,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599407398] [2021-11-25 19:36:08,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599407398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:08,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:08,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:36:08,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365725355] [2021-11-25 19:36:08,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:08,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:36:08,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:36:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:36:08,527 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:08,610 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2021-11-25 19:36:08,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:36:08,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-25 19:36:08,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:08,612 INFO L225 Difference]: With dead ends: 126 [2021-11-25 19:36:08,613 INFO L226 Difference]: Without dead ends: 124 [2021-11-25 19:36:08,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:36:08,614 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 69 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:08,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 162 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-25 19:36:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-11-25 19:36:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 102 states have internal predecessors, (126), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2021-11-25 19:36:08,627 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 16 [2021-11-25 19:36:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:08,628 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2021-11-25 19:36:08,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2021-11-25 19:36:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:36:08,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:08,633 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:08,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:36:08,634 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:08,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2068814548, now seen corresponding path program 1 times [2021-11-25 19:36:08,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:08,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856221371] [2021-11-25 19:36:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:08,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:36:08,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:08,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856221371] [2021-11-25 19:36:08,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856221371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:08,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:08,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:36:08,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684393370] [2021-11-25 19:36:08,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:08,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:36:08,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:36:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:36:08,709 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:36:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:08,778 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2021-11-25 19:36:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:36:08,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-25 19:36:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:08,780 INFO L225 Difference]: With dead ends: 124 [2021-11-25 19:36:08,784 INFO L226 Difference]: Without dead ends: 122 [2021-11-25 19:36:08,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:36:08,788 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 75 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:08,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 158 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:36:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-25 19:36:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2021-11-25 19:36:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.367816091954023) internal successors, (119), 96 states have internal predecessors, (119), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2021-11-25 19:36:08,801 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 20 [2021-11-25 19:36:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:08,802 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2021-11-25 19:36:08,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:36:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2021-11-25 19:36:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 19:36:08,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:08,805 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:08,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:36:08,806 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:08,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1503944743, now seen corresponding path program 1 times [2021-11-25 19:36:08,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:08,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153066119] [2021-11-25 19:36:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:08,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 19:36:08,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:08,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153066119] [2021-11-25 19:36:08,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153066119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:08,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:08,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:36:08,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918110946] [2021-11-25 19:36:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:08,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:36:08,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:36:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:36:08,859 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:08,905 INFO L93 Difference]: Finished difference Result 129 states and 154 transitions. [2021-11-25 19:36:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:36:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-25 19:36:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:08,914 INFO L225 Difference]: With dead ends: 129 [2021-11-25 19:36:08,914 INFO L226 Difference]: Without dead ends: 128 [2021-11-25 19:36:08,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:36:08,915 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:08,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:36:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-25 19:36:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 103. [2021-11-25 19:36:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 93 states have internal predecessors, (114), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:36:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2021-11-25 19:36:08,925 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 19 [2021-11-25 19:36:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:08,926 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2021-11-25 19:36:08,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:36:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2021-11-25 19:36:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:36:08,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:08,928 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:08,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:36:08,928 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1874232476, now seen corresponding path program 1 times [2021-11-25 19:36:08,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:08,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789116092] [2021-11-25 19:36:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:08,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:36:09,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:09,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789116092] [2021-11-25 19:36:09,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789116092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:09,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:09,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 19:36:09,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514469820] [2021-11-25 19:36:09,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:09,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:36:09,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:09,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:36:09,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:36:09,102 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:36:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:09,188 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2021-11-25 19:36:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:36:09,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-11-25 19:36:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:09,190 INFO L225 Difference]: With dead ends: 165 [2021-11-25 19:36:09,190 INFO L226 Difference]: Without dead ends: 137 [2021-11-25 19:36:09,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:36:09,192 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:09,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 370 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-25 19:36:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-11-25 19:36:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 98 states have internal predecessors, (117), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-25 19:36:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-11-25 19:36:09,203 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 22 [2021-11-25 19:36:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:09,204 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-11-25 19:36:09,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:36:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-11-25 19:36:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 19:36:09,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:09,205 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:09,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:36:09,206 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash 448372476, now seen corresponding path program 1 times [2021-11-25 19:36:09,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:09,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832663268] [2021-11-25 19:36:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:09,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:36:09,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:09,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832663268] [2021-11-25 19:36:09,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832663268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:09,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:36:09,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:36:09,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030665029] [2021-11-25 19:36:09,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:09,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:36:09,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:36:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:36:09,265 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:36:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:09,336 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2021-11-25 19:36:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:36:09,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-25 19:36:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:09,338 INFO L225 Difference]: With dead ends: 122 [2021-11-25 19:36:09,338 INFO L226 Difference]: Without dead ends: 120 [2021-11-25 19:36:09,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:36:09,340 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 65 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:09,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 157 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-25 19:36:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2021-11-25 19:36:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 93 states have internal predecessors, (112), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-25 19:36:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-11-25 19:36:09,354 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 22 [2021-11-25 19:36:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:09,354 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-11-25 19:36:09,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 19:36:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2021-11-25 19:36:09,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:36:09,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:09,356 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:09,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:36:09,357 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:09,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 60548045, now seen corresponding path program 1 times [2021-11-25 19:36:09,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:09,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944574137] [2021-11-25 19:36:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:09,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:36:09,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944574137] [2021-11-25 19:36:09,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944574137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:09,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150743594] [2021-11-25 19:36:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:09,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:09,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:09,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:36:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:09,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 19:36:09,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:36:09,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:36:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:36:10,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150743594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:36:10,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236339495] [2021-11-25 19:36:10,256 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-25 19:36:10,256 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:36:10,261 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:36:10,266 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:36:10,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:36:11,393 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-25 19:36:11,530 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:36:14,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [236339495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:14,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:36:14,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8, 9, 7] total 31 [2021-11-25 19:36:14,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777951624] [2021-11-25 19:36:14,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:14,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 19:36:14,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 19:36:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:36:14,606 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:36:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:17,027 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2021-11-25 19:36:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 19:36:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2021-11-25 19:36:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:17,029 INFO L225 Difference]: With dead ends: 229 [2021-11-25 19:36:17,030 INFO L226 Difference]: Without dead ends: 227 [2021-11-25 19:36:17,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=170, Invalid=1390, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 19:36:17,031 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 250 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:17,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 240 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 19:36:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-25 19:36:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 136. [2021-11-25 19:36:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 108 states have (on average 1.3148148148148149) internal successors, (142), 121 states have internal predecessors, (142), 9 states have call successors, (9), 4 states have call predecessors, (9), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2021-11-25 19:36:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2021-11-25 19:36:17,064 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 26 [2021-11-25 19:36:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:17,064 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2021-11-25 19:36:17,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 19:36:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2021-11-25 19:36:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 19:36:17,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:17,069 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:17,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:17,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 19:36:17,298 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1062547703, now seen corresponding path program 1 times [2021-11-25 19:36:17,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:17,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612234732] [2021-11-25 19:36:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:17,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:36:17,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:17,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612234732] [2021-11-25 19:36:17,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612234732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:17,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419092326] [2021-11-25 19:36:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:17,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:17,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:17,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:36:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:17,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 19:36:17,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 19:36:17,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:36:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:36:18,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419092326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:36:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691391614] [2021-11-25 19:36:18,122 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 19:36:18,122 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:36:18,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:36:18,123 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:36:18,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:36:18,519 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2021-11-25 19:36:18,563 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:36:21,457 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4595#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= |ULTIMATE.start_main_~zero~0#1| 0) (not (= (mod |ULTIMATE.start_addflt_~b#1| 4294967296) 0)) (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_#in~a#1|) (or (and (= |ULTIMATE.start_addflt_#in~a#1| |ULTIMATE.start_addflt_~a#1|) (<= (mod |ULTIMATE.start_addflt_#in~b#1| 4294967296) (mod |ULTIMATE.start_addflt_#in~a#1| 4294967296)) (= |ULTIMATE.start_addflt_#in~b#1| |ULTIMATE.start_addflt_~b#1|)) (and (= |ULTIMATE.start_addflt_~tmp~0#1| |ULTIMATE.start_addflt_~b#1|) (< (mod |ULTIMATE.start_addflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_addflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_addflt_~tmp~0#1| |ULTIMATE.start_addflt_#in~a#1|) (= |ULTIMATE.start_addflt_#in~b#1| |ULTIMATE.start_addflt_~a#1|))) (= 1 |ULTIMATE.start_main_~tmp___0~0#1|) (= |ULTIMATE.start_main_~tmp~2#1| 1) (< (+ (ite (<= (mod (div |ULTIMATE.start_addflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_addflt_~a#1| 16777216) 4294967296) (+ (mod (div |ULTIMATE.start_addflt_~a#1| 16777216) 4294967296) (- 4294967296))) 2147483520) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_#in~b#1|) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp___0~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:36:21,457 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:36:21,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:36:21,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2021-11-25 19:36:21,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711347696] [2021-11-25 19:36:21,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:36:21,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 19:36:21,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:21,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 19:36:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2021-11-25 19:36:21,460 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:36:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:21,892 INFO L93 Difference]: Finished difference Result 252 states and 309 transitions. [2021-11-25 19:36:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 19:36:21,894 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2021-11-25 19:36:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:21,895 INFO L225 Difference]: With dead ends: 252 [2021-11-25 19:36:21,895 INFO L226 Difference]: Without dead ends: 106 [2021-11-25 19:36:21,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 19:36:21,900 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 28 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:21,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 490 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:36:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-25 19:36:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2021-11-25 19:36:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 80 states have internal predecessors, (92), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-25 19:36:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2021-11-25 19:36:21,910 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 28 [2021-11-25 19:36:21,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:21,911 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2021-11-25 19:36:21,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 19:36:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2021-11-25 19:36:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:36:21,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:21,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:21,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:22,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:22,138 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1909646632, now seen corresponding path program 1 times [2021-11-25 19:36:22,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:22,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512489956] [2021-11-25 19:36:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:22,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:36:22,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512489956] [2021-11-25 19:36:22,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512489956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:22,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585831505] [2021-11-25 19:36:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:22,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:22,299 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:22,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:36:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:22,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 19:36:22,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:36:22,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:36:35,361 WARN L860 $PredicateComparison]: unable to prove that (forall ((|aux_mod_aux_div_v_ULTIMATE.start_addflt_~a#1_20_48_61| Int)) (or (<= 2147483776 |aux_mod_aux_div_v_ULTIMATE.start_addflt_~a#1_20_48_61|) (< |aux_mod_aux_div_v_ULTIMATE.start_addflt_~a#1_20_48_61| 0) (let ((.cse1 (* |aux_mod_aux_div_v_ULTIMATE.start_addflt_~a#1_20_48_61| 16777216)) (.cse3 (* |aux_mod_aux_div_v_ULTIMATE.start_addflt_~a#1_20_48_61| (- 16777216))) (.cse2 (* |c_ULTIMATE.start_main_~a~0#1| (- 1))) (.cse5 (mod |c_ULTIMATE.start_main_#t~ret10#1| 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse0 (* |c_ULTIMATE.start_main_#t~ret10#1| (- 1)))) (and (or (<= (div .cse0 (- 4294967296)) (+ (div (+ (- 4294967296) |c_ULTIMATE.start_main_#t~ret10#1|) 4294967296) 1)) (<= (div (+ (- 1) .cse1 .cse2) (- 72057594037927936)) (+ (div (+ .cse3 |c_ULTIMATE.start_main_~a~0#1| (- 16777216)) 72057594037927936) 1)) (< .cse4 .cse5) (<= (div (+ (* (div (+ (- 1) .cse2) (- 16777216)) (- 1)) 2147483648) (- 4294967296)) (+ (div (+ (div (+ |c_ULTIMATE.start_main_~a~0#1| (- 16777216)) 16777216) (- 4294967295)) 4294967296) 1))) (or (<= (div (+ (- 1) .cse1 .cse0) (- 72057594037927936)) (+ (div (+ .cse3 (- 16777216) |c_ULTIMATE.start_main_#t~ret10#1|) 72057594037927936) 1)) (<= (div .cse2 (- 4294967296)) (+ (div (+ |c_ULTIMATE.start_main_~a~0#1| (- 4294967296)) 4294967296) 1)) (<= .cse5 .cse4) (<= (div (+ (* (div (+ (- 1) .cse0) (- 16777216)) (- 1)) 2147483648) (- 4294967296)) (+ (div (+ (div (+ (- 16777216) |c_ULTIMATE.start_main_#t~ret10#1|) 16777216) (- 4294967295)) 4294967296) 1))))))) is different from true [2021-11-25 19:36:42,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585831505] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:42,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1700611139] [2021-11-25 19:36:42,103 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-25 19:36:42,104 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:36:42,104 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:36:42,104 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:36:42,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:36:42,349 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-25 19:36:42,539 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:36:46,682 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5180#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (or (and (<= (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~sa~0#1| |ULTIMATE.start_main_~tmp~2#1|) (or (and (<= (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)) (= 0 |ULTIMATE.start_main_~tmp~2#1|)) (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)))) (and (= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~a~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)))) (not (= (mod |ULTIMATE.start_addflt_~b#1| 4294967296) 0)) (= (select |#length| 2) 24) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (or (and (<= (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296)) (= 0 |ULTIMATE.start_main_~tmp___0~0#1|)) (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= 1 |ULTIMATE.start_main_~tmp___0~0#1|))) (<= (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp___0~0#1|))) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_#in~a#1|) (or (and (= |ULTIMATE.start_addflt_#in~a#1| |ULTIMATE.start_addflt_~a#1|) (<= (mod |ULTIMATE.start_addflt_#in~b#1| 4294967296) (mod |ULTIMATE.start_addflt_#in~a#1| 4294967296)) (= |ULTIMATE.start_addflt_#in~b#1| |ULTIMATE.start_addflt_~b#1|)) (and (= |ULTIMATE.start_addflt_~tmp~0#1| |ULTIMATE.start_addflt_~b#1|) (< (mod |ULTIMATE.start_addflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_addflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_addflt_~tmp~0#1| |ULTIMATE.start_addflt_#in~a#1|) (= |ULTIMATE.start_addflt_#in~b#1| |ULTIMATE.start_addflt_~a#1|))) (= (select |#valid| 1) 1) (< (+ (ite (<= (mod (div |ULTIMATE.start_addflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_addflt_~a#1| 16777216) 4294967296) (+ (mod (div |ULTIMATE.start_addflt_~a#1| 16777216) 4294967296) (- 4294967296))) 2147483520) 0) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_#in~b#1|) (= (select (select |#memory_int| 1) 0) 48) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:36:46,682 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:36:46,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:36:46,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-11-25 19:36:46,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541429145] [2021-11-25 19:36:46,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:36:46,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 19:36:46,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:46,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 19:36:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=514, Unknown=1, NotChecked=46, Total=650 [2021-11-25 19:36:46,685 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:36:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:46,824 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2021-11-25 19:36:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:36:46,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-25 19:36:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:46,826 INFO L225 Difference]: With dead ends: 124 [2021-11-25 19:36:46,827 INFO L226 Difference]: Without dead ends: 123 [2021-11-25 19:36:46,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=102, Invalid=603, Unknown=1, NotChecked=50, Total=756 [2021-11-25 19:36:46,828 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 66 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:46,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 374 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-25 19:36:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 100. [2021-11-25 19:36:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 86 states have internal predecessors, (98), 7 states have call successors, (7), 4 states have call predecessors, (7), 7 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-25 19:36:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-11-25 19:36:46,839 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 32 [2021-11-25 19:36:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-11-25 19:36:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 19:36:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-11-25 19:36:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:36:46,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:46,841 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:46,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:47,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-25 19:36:47,061 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash 435860520, now seen corresponding path program 2 times [2021-11-25 19:36:47,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:47,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381698459] [2021-11-25 19:36:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:47,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:36:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:36:47,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:36:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381698459] [2021-11-25 19:36:47,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381698459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:36:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644198192] [2021-11-25 19:36:47,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:36:47,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:36:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:36:47,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:36:47,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:36:47,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 19:36:47,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:36:47,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:36:47,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:36:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:36:47,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:36:47,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644198192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:36:47,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:36:47,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-11-25 19:36:47,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321077789] [2021-11-25 19:36:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:36:47,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:36:47,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:36:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:36:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-25 19:36:47,593 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:36:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:36:47,707 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2021-11-25 19:36:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:36:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-11-25 19:36:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:36:47,709 INFO L225 Difference]: With dead ends: 132 [2021-11-25 19:36:47,709 INFO L226 Difference]: Without dead ends: 131 [2021-11-25 19:36:47,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:36:47,710 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 43 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:36:47,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 256 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:36:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-25 19:36:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 102. [2021-11-25 19:36:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 88 states have internal predecessors, (99), 7 states have call successors, (7), 4 states have call predecessors, (7), 8 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-25 19:36:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2021-11-25 19:36:47,722 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 32 [2021-11-25 19:36:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:36:47,722 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2021-11-25 19:36:47,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 19:36:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2021-11-25 19:36:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:36:47,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:36:47,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:47,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:36:47,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 19:36:47,930 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-25 19:36:47,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:36:47,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1219382986, now seen corresponding path program 1 times [2021-11-25 19:36:47,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:36:47,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121692334] [2021-11-25 19:36:47,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:36:47,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:36:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:36:47,972 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:36:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:36:48,021 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:36:48,021 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:36:48,023 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2021-11-25 19:36:48,024 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2021-11-25 19:36:48,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2021-11-25 19:36:48,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2021-11-25 19:36:48,025 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2021-11-25 19:36:48,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2021-11-25 19:36:48,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2021-11-25 19:36:48,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2021-11-25 19:36:48,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2021-11-25 19:36:48,026 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2021-11-25 19:36:48,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2021-11-25 19:36:48,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2021-11-25 19:36:48,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2021-11-25 19:36:48,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2021-11-25 19:36:48,027 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2021-11-25 19:36:48,028 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2021-11-25 19:36:48,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 19:36:48,032 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:36:48,035 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:36:48,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:36:48 BoogieIcfgContainer [2021-11-25 19:36:48,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:36:48,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:36:48,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:36:48,101 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:36:48,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:36:06" (3/4) ... [2021-11-25 19:36:48,104 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:36:48,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:36:48,106 INFO L158 Benchmark]: Toolchain (without parser) took 43355.61ms. Allocated memory was 102.8MB in the beginning and 167.8MB in the end (delta: 65.0MB). Free memory was 60.5MB in the beginning and 49.8MB in the end (delta: 10.7MB). Peak memory consumption was 75.4MB. Max. memory is 16.1GB. [2021-11-25 19:36:48,106 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:36:48,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.18ms. Allocated memory is still 102.8MB. Free memory was 60.3MB in the beginning and 73.5MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:36:48,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.43ms. Allocated memory is still 102.8MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:36:48,107 INFO L158 Benchmark]: Boogie Preprocessor took 29.34ms. Allocated memory is still 102.8MB. Free memory was 71.4MB in the beginning and 69.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:36:48,107 INFO L158 Benchmark]: RCFGBuilder took 867.71ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 46.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-25 19:36:48,108 INFO L158 Benchmark]: TraceAbstraction took 41984.49ms. Allocated memory was 102.8MB in the beginning and 167.8MB in the end (delta: 65.0MB). Free memory was 46.5MB in the beginning and 49.8MB in the end (delta: -3.3MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2021-11-25 19:36:48,109 INFO L158 Benchmark]: Witness Printer took 3.85ms. Allocated memory is still 167.8MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:36:48,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 102.8MB. Free memory is still 77.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.18ms. Allocated memory is still 102.8MB. Free memory was 60.3MB in the beginning and 73.5MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.43ms. Allocated memory is still 102.8MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.34ms. Allocated memory is still 102.8MB. Free memory was 71.4MB in the beginning and 69.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 867.71ms. Allocated memory is still 102.8MB. Free memory was 69.9MB in the beginning and 46.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 41984.49ms. Allocated memory was 102.8MB in the beginning and 167.8MB in the end (delta: 65.0MB). Free memory was 46.5MB in the beginning and 49.8MB in the end (delta: -3.3MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Witness Printer took 3.85ms. Allocated memory is still 167.8MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 112. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add ; [L234] unsigned int zero ; [L235] int sa ; [L236] int sb ; [L237] int tmp ; [L238] int tmp___0 ; [L239] int tmp___1 ; [L240] int tmp___2 ; [L241] int tmp___3 ; [L242] int tmp___4 ; [L243] int tmp___5 ; [L244] int tmp___6 ; [L245] int tmp___7 ; [L246] int tmp___8 ; [L247] int tmp___9 ; [L248] int __retres23 ; VAL [ea=127, eb=0] [L252] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); [L252] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0] [L252] zero = base2flt(0, 0) [L253] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L81] return (__retres4); [L253] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, zero=0] [L253] a = base2flt(ma, ea) [L254] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L78] EXPR e + 128 [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483647, e=0, res=2147483647] [L81] return (__retres4); [L254] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028799166447615, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L254] b = base2flt(mb, eb) [L256] COND FALSE !(a < zero) [L259] COND TRUE a > zero [L260] tmp = 1 [L264] sa = tmp [L266] COND FALSE !(b < zero) [L269] COND TRUE b > zero [L270] tmp___0 = 1 [L274] sb = tmp___0 [L277] CALL addflt(a, b) [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; [L95] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, tmp=4294967295] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, tmp=4294967295] [L110] EXPR (int )(a >> 24U) - 128 [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, ea=127, tmp=4294967295] [L113] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, ea=127, tmp=4294967295] - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 41.8s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 959 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 916 mSDsluCounter, 3394 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2753 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1450 IncrementalHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 857 mSDtfsCounter, 1450 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 385 GetRequests, 216 SyntacticMatches, 10 SemanticMatches, 159 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=13, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 334 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 467 NumberOfCodeBlocks, 449 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 1361 SizeOfPredicates, 33 NumberOfNonLiveVariables, 429 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 23 InterpolantComputations, 13 PerfectInterpolantSequences, 138/172 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: OVERALL_TIME: 1.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 22, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 23, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 9, TOOLS_POST_CALL_TIME: 0.4s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 38, TOOLS_QUANTIFIERELIM_TIME: 1.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 55, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 11, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 22, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 190, DAG_COMPRESSION_RETAINED_NODES: 51, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:36:48,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45601b12-a65d-4767-a984-cf2f66c7f4ef/bin/utaipan-eEHZpOm5b7/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample