./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/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_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b291da6da115062c14f66e51226c64b32b538a6c3d52e3544b8930bfb203253 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:42:43,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:42:43,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:42:43,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:42:43,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:42:43,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:42:43,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:42:43,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:42:43,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:42:43,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:42:43,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:42:43,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:42:43,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:42:43,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:42:43,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:42:43,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:42:43,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:42:43,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:42:43,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:42:43,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:42:43,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:42:43,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:42:43,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:42:43,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:42:43,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:42:43,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:42:43,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:42:43,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:42:43,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:42:43,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:42:43,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:42:43,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:42:43,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:42:43,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:42:43,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:42:43,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:42:43,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:42:43,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:42:43,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:42:43,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:42:43,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:42:43,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:42:43,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:42:43,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:42:43,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:42:43,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:42:43,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:42:43,411 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:42:43,412 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:42:43,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:42:43,412 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:42:43,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:42:43,413 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:42:43,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:42:43,413 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:42:43,413 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:42:43,414 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:42:43,414 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:42:43,414 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:42:43,414 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:42:43,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:42:43,416 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:42:43,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:42:43,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:42:43,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:42:43,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:42:43,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:42:43,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:42:43,417 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:42:43,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:42:43,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:42:43,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:42:43,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:42:43,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:42:43,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:42:43,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:42:43,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:42:43,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:42:43,420 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:42:43,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:42:43,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:42:43,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:42:43,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:42:43,421 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_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b291da6da115062c14f66e51226c64b32b538a6c3d52e3544b8930bfb203253 [2021-11-25 19:42:43,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:42:43,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:42:43,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:42:43,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:42:43,755 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:42:43,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2021-11-25 19:42:43,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/data/c9ee84498/45f9be9f1f634b16ac6d0d3f724e3999/FLAG4894b4667 [2021-11-25 19:42:44,400 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:42:44,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/sv-benchmarks/c/eca-rers2012/Problem01_label30.c [2021-11-25 19:42:44,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/data/c9ee84498/45f9be9f1f634b16ac6d0d3f724e3999/FLAG4894b4667 [2021-11-25 19:42:44,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/data/c9ee84498/45f9be9f1f634b16ac6d0d3f724e3999 [2021-11-25 19:42:44,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:42:44,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:42:44,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:42:44,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:42:44,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:42:44,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:42:44" (1/1) ... [2021-11-25 19:42:44,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d86ce26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:44, skipping insertion in model container [2021-11-25 19:42:44,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:42:44" (1/1) ... [2021-11-25 19:42:44,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:42:44,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:42:45,124 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_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/sv-benchmarks/c/eca-rers2012/Problem01_label30.c[21088,21101] [2021-11-25 19:42:45,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:42:45,147 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:42:45,250 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_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/sv-benchmarks/c/eca-rers2012/Problem01_label30.c[21088,21101] [2021-11-25 19:42:45,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:42:45,276 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:42:45,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45 WrapperNode [2021-11-25 19:42:45,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:42:45,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:42:45,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:42:45,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:42:45,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,369 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2021-11-25 19:42:45,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:42:45,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:42:45,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:42:45,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:42:45,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:42:45,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:42:45,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:42:45,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:42:45,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (1/1) ... [2021-11-25 19:42:45,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:42:45,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:45,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:42:45,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:42:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:42:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:42:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:42:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:42:45,615 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:42:45,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:42:46,669 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:42:46,878 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:42:46,878 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:42:46,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:46 BoogieIcfgContainer [2021-11-25 19:42:46,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:42:46,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:42:46,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:42:46,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:42:46,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:42:44" (1/3) ... [2021-11-25 19:42:46,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207b53ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:42:46, skipping insertion in model container [2021-11-25 19:42:46,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:42:45" (2/3) ... [2021-11-25 19:42:46,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207b53ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:42:46, skipping insertion in model container [2021-11-25 19:42:46,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:46" (3/3) ... [2021-11-25 19:42:46,909 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label30.c [2021-11-25 19:42:46,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:42:46,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:42:46,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:42:46,994 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 19:42:46,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:42:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 19:42:47,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:47,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:47,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash 379028359, now seen corresponding path program 1 times [2021-11-25 19:42:47,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:47,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318615453] [2021-11-25 19:42:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:47,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:47,496 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 19:42:47,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:47,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318615453] [2021-11-25 19:42:47,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318615453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:47,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:47,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:42:47,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267272440] [2021-11-25 19:42:47,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:47,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:42:47,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:47,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:42:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:42:47,536 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:48,200 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-11-25 19:42:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:42:48,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-25 19:42:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:48,222 INFO L225 Difference]: With dead ends: 297 [2021-11-25 19:42:48,222 INFO L226 Difference]: Without dead ends: 216 [2021-11-25 19:42:48,226 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 19:42:48,232 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 172 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:48,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 35 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:42:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-25 19:42:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-25 19:42:48,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5627906976744186) internal successors, (336), 215 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-11-25 19:42:48,318 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-11-25 19:42:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:48,319 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-11-25 19:42:48,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:48,319 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-11-25 19:42:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 19:42:48,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:48,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:48,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:42:48,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1583650950, now seen corresponding path program 1 times [2021-11-25 19:42:48,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:48,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581651595] [2021-11-25 19:42:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:48,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:42:48,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:48,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581651595] [2021-11-25 19:42:48,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581651595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:48,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:48,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:42:48,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761602708] [2021-11-25 19:42:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:48,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:42:48,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:48,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:42:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:42:48,638 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:49,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:49,238 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-11-25 19:42:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:42:49,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 19:42:49,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:49,242 INFO L225 Difference]: With dead ends: 500 [2021-11-25 19:42:49,242 INFO L226 Difference]: Without dead ends: 287 [2021-11-25 19:42:49,248 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 19:42:49,251 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:49,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 77 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:42:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-25 19:42:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-11-25 19:42:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3627906976744186) internal successors, (293), 215 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-11-25 19:42:49,280 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-11-25 19:42:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:49,285 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-11-25 19:42:49,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-11-25 19:42:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 19:42:49,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:49,291 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:49,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:42:49,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:49,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2090516040, now seen corresponding path program 1 times [2021-11-25 19:42:49,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:49,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77720813] [2021-11-25 19:42:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:49,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:42:49,389 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77720813] [2021-11-25 19:42:49,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77720813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:49,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:49,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:42:49,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775427781] [2021-11-25 19:42:49,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:49,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:42:49,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:42:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:42:49,394 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:49,627 INFO L93 Difference]: Finished difference Result 502 states and 684 transitions. [2021-11-25 19:42:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:42:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-25 19:42:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:49,629 INFO L225 Difference]: With dead ends: 502 [2021-11-25 19:42:49,629 INFO L226 Difference]: Without dead ends: 287 [2021-11-25 19:42:49,630 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 19:42:49,631 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 65 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:49,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 42 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:42:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-25 19:42:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-25 19:42:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3146853146853146) internal successors, (376), 286 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 376 transitions. [2021-11-25 19:42:49,648 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 376 transitions. Word has length 86 [2021-11-25 19:42:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:49,648 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 376 transitions. [2021-11-25 19:42:49,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 376 transitions. [2021-11-25 19:42:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-25 19:42:49,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:49,650 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:49,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:42:49,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1999064902, now seen corresponding path program 1 times [2021-11-25 19:42:49,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:49,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925690844] [2021-11-25 19:42:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:49,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:42:49,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:49,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925690844] [2021-11-25 19:42:49,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925690844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:49,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:49,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:42:49,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000305467] [2021-11-25 19:42:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:49,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:42:49,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:49,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:42:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:42:49,748 INFO L87 Difference]: Start difference. First operand 287 states and 376 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:50,057 INFO L93 Difference]: Finished difference Result 857 states and 1125 transitions. [2021-11-25 19:42:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:42:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-25 19:42:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:50,061 INFO L225 Difference]: With dead ends: 857 [2021-11-25 19:42:50,062 INFO L226 Difference]: Without dead ends: 571 [2021-11-25 19:42:50,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:42:50,067 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:50,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 24 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:42:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-25 19:42:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2021-11-25 19:42:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.348697394789579) internal successors, (673), 499 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 673 transitions. [2021-11-25 19:42:50,101 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 673 transitions. Word has length 95 [2021-11-25 19:42:50,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:50,102 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 673 transitions. [2021-11-25 19:42:50,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 673 transitions. [2021-11-25 19:42:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 19:42:50,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:50,105 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:50,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:42:50,106 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash 812564201, now seen corresponding path program 1 times [2021-11-25 19:42:50,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:50,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429092595] [2021-11-25 19:42:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:50,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 19:42:50,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:50,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429092595] [2021-11-25 19:42:50,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429092595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:50,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:50,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:42:50,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513916462] [2021-11-25 19:42:50,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:50,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:42:50,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:50,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:42:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:42:50,234 INFO L87 Difference]: Start difference. First operand 500 states and 673 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:50,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:50,646 INFO L93 Difference]: Finished difference Result 1283 states and 1776 transitions. [2021-11-25 19:42:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:42:50,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-25 19:42:50,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:50,651 INFO L225 Difference]: With dead ends: 1283 [2021-11-25 19:42:50,651 INFO L226 Difference]: Without dead ends: 784 [2021-11-25 19:42:50,652 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 19:42:50,654 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 137 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:50,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 31 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:42:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-11-25 19:42:50,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 642. [2021-11-25 19:42:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.327613104524181) internal successors, (851), 641 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 851 transitions. [2021-11-25 19:42:50,685 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 851 transitions. Word has length 101 [2021-11-25 19:42:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:50,686 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 851 transitions. [2021-11-25 19:42:50,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 851 transitions. [2021-11-25 19:42:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 19:42:50,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:50,691 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 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 19:42:50,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:42:50,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:50,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1324207788, now seen corresponding path program 1 times [2021-11-25 19:42:50,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:50,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156886733] [2021-11-25 19:42:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:50,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:42:50,794 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156886733] [2021-11-25 19:42:50,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156886733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:50,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:50,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:42:50,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831647075] [2021-11-25 19:42:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:50,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:42:50,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:42:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:42:50,797 INFO L87 Difference]: Start difference. First operand 642 states and 851 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:51,233 INFO L93 Difference]: Finished difference Result 1567 states and 2091 transitions. [2021-11-25 19:42:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:42:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-25 19:42:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:51,248 INFO L225 Difference]: With dead ends: 1567 [2021-11-25 19:42:51,248 INFO L226 Difference]: Without dead ends: 926 [2021-11-25 19:42:51,250 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 19:42:51,252 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 191 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:51,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 37 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:42:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-11-25 19:42:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-11-25 19:42:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3149882903981265) internal successors, (1123), 854 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1123 transitions. [2021-11-25 19:42:51,310 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1123 transitions. Word has length 115 [2021-11-25 19:42:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:51,310 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1123 transitions. [2021-11-25 19:42:51,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:51,310 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1123 transitions. [2021-11-25 19:42:51,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 19:42:51,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:51,313 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:51,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:42:51,314 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:51,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1087705769, now seen corresponding path program 1 times [2021-11-25 19:42:51,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:51,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141672521] [2021-11-25 19:42:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:51,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:42:51,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:51,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141672521] [2021-11-25 19:42:51,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141672521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:51,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:51,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:42:51,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69530349] [2021-11-25 19:42:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:51,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:42:51,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:42:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:42:51,429 INFO L87 Difference]: Start difference. First operand 855 states and 1123 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:51,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:51,860 INFO L93 Difference]: Finished difference Result 1922 states and 2505 transitions. [2021-11-25 19:42:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:42:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-25 19:42:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:51,868 INFO L225 Difference]: With dead ends: 1922 [2021-11-25 19:42:51,869 INFO L226 Difference]: Without dead ends: 1068 [2021-11-25 19:42:51,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:42:51,873 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 105 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:51,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 24 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:42:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-25 19:42:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-11-25 19:42:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.278918918918919) internal successors, (1183), 925 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1183 transitions. [2021-11-25 19:42:51,904 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1183 transitions. Word has length 132 [2021-11-25 19:42:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:51,904 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1183 transitions. [2021-11-25 19:42:51,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1183 transitions. [2021-11-25 19:42:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-25 19:42:51,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:51,908 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:51,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:42:51,908 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:51,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1119868247, now seen corresponding path program 1 times [2021-11-25 19:42:51,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:51,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456529944] [2021-11-25 19:42:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:51,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-25 19:42:52,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:52,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456529944] [2021-11-25 19:42:52,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456529944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:52,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:42:52,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:42:52,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156489176] [2021-11-25 19:42:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:52,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:42:52,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:42:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:42:52,018 INFO L87 Difference]: Start difference. First operand 926 states and 1183 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:52,282 INFO L93 Difference]: Finished difference Result 1993 states and 2518 transitions. [2021-11-25 19:42:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:42:52,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2021-11-25 19:42:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:52,288 INFO L225 Difference]: With dead ends: 1993 [2021-11-25 19:42:52,289 INFO L226 Difference]: Without dead ends: 1068 [2021-11-25 19:42:52,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:42:52,291 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:52,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:42:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-25 19:42:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2021-11-25 19:42:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2269076305220883) internal successors, (1222), 996 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1222 transitions. [2021-11-25 19:42:52,336 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1222 transitions. Word has length 175 [2021-11-25 19:42:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:52,338 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1222 transitions. [2021-11-25 19:42:52,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1222 transitions. [2021-11-25 19:42:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-25 19:42:52,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:52,343 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:52,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:42:52,343 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2104902912, now seen corresponding path program 1 times [2021-11-25 19:42:52,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:52,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868263916] [2021-11-25 19:42:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:52,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:42:52,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:52,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868263916] [2021-11-25 19:42:52,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868263916] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:42:52,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343158235] [2021-11-25 19:42:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:52,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:52,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:52,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:42:52,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:42:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:52,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:42:52,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:42:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-25 19:42:53,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:42:53,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343158235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:53,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:42:53,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 19:42:53,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491915383] [2021-11-25 19:42:53,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:53,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:42:53,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:42:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:53,047 INFO L87 Difference]: Start difference. First operand 997 states and 1222 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:53,303 INFO L93 Difference]: Finished difference Result 1993 states and 2443 transitions. [2021-11-25 19:42:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:42:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2021-11-25 19:42:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:53,309 INFO L225 Difference]: With dead ends: 1993 [2021-11-25 19:42:53,310 INFO L226 Difference]: Without dead ends: 997 [2021-11-25 19:42:53,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:42:53,312 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:53,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 106 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:42:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-25 19:42:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-11-25 19:42:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.1545945945945946) internal successors, (1068), 925 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1068 transitions. [2021-11-25 19:42:53,368 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1068 transitions. Word has length 197 [2021-11-25 19:42:53,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:53,369 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1068 transitions. [2021-11-25 19:42:53,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1068 transitions. [2021-11-25 19:42:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-25 19:42:53,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:42:53,374 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:53,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:42:53,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:53,594 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:42:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:42:53,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1017032538, now seen corresponding path program 1 times [2021-11-25 19:42:53,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:42:53,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996692991] [2021-11-25 19:42:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:53,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:42:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-25 19:42:53,850 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:42:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996692991] [2021-11-25 19:42:53,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996692991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:42:53,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205966792] [2021-11-25 19:42:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:42:53,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:53,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:42:53,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:42:53,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:42:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:42:53,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:42:54,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:42:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-25 19:42:54,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:42:54,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205966792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:54,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:42:54,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-25 19:42:54,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952308738] [2021-11-25 19:42:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:54,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:42:54,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:42:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:42:54,379 INFO L87 Difference]: Start difference. First operand 926 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:54,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:54,642 INFO L93 Difference]: Finished difference Result 1920 states and 2229 transitions. [2021-11-25 19:42:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:42:54,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-25 19:42:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:54,644 INFO L225 Difference]: With dead ends: 1920 [2021-11-25 19:42:54,644 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:42:54,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:42:54,646 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:54,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:42:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:42:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:42:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:42:54,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2021-11-25 19:42:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:54,649 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:42:54,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:42:54,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:42:54,652 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:42:54,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:42:54,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:42:54,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:42:55,515 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-25 19:42:55,515 INFO L858 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-25 19:42:55,515 INFO L858 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-25 19:42:55,515 INFO L858 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-25 19:42:55,515 INFO L858 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-25 19:42:55,515 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-25 19:42:55,516 INFO L858 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-25 19:42:55,517 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-25 19:42:55,518 INFO L858 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-25 19:42:55,519 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-25 19:42:55,519 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:42:55,519 INFO L858 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-25 19:42:55,519 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-25 19:42:55,519 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-25 19:42:55,520 INFO L854 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse2 (= ~a12~0 8)) (.cse4 (= ~a17~0 1)) (.cse6 (not (= ~a7~0 1))) (.cse3 (= ~a21~0 1)) (.cse5 (= ~a20~0 1)) (.cse7 (= ~a16~0 6)) (.cse0 (<= ~a21~0 0)) (.cse8 (<= ~a17~0 0))) (or (and .cse0 .cse1) (and .cse2 (= ~a8~0 13) .cse3 .cse4 .cse5 (= ~a16~0 4)) (and (not .cse5) .cse6 .cse3 .cse4 .cse1) (and .cse7 .cse6 .cse3 .cse4) (and .cse7 .cse6 .cse8 .cse3) (and .cse8 .cse3 .cse1) (and .cse2 .cse6 .cse3 .cse4 .cse5) (and .cse6 .cse8 .cse3 .cse5) (and .cse7 .cse0 .cse8))) [2021-11-25 19:42:55,520 INFO L858 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-25 19:42:55,521 INFO L858 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-25 19:42:55,521 INFO L858 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-25 19:42:55,521 INFO L858 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-25 19:42:55,521 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-25 19:42:55,521 INFO L858 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-25 19:42:55,521 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-25 19:42:55,522 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:42:55,522 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-25 19:42:55,522 INFO L861 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-25 19:42:55,522 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-25 19:42:55,522 INFO L858 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-25 19:42:55,522 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-25 19:42:55,523 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-25 19:42:55,523 INFO L858 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-11-25 19:42:55,523 INFO L858 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-25 19:42:55,523 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-25 19:42:55,523 INFO L858 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-25 19:42:55,523 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-25 19:42:55,523 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-25 19:42:55,524 INFO L858 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-25 19:42:55,524 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-25 19:42:55,524 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-25 19:42:55,524 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-25 19:42:55,524 INFO L858 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-11-25 19:42:55,525 INFO L854 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse2 (= ~a12~0 8)) (.cse4 (= ~a17~0 1)) (.cse6 (not (= ~a7~0 1))) (.cse3 (= ~a21~0 1)) (.cse5 (= ~a20~0 1)) (.cse7 (= ~a16~0 6)) (.cse0 (<= ~a21~0 0)) (.cse8 (<= ~a17~0 0))) (or (and .cse0 .cse1) (and .cse2 (= ~a8~0 13) .cse3 .cse4 .cse5 (= ~a16~0 4)) (and (not .cse5) .cse6 .cse3 .cse4 .cse1) (and .cse7 .cse6 .cse3 .cse4) (and .cse7 .cse6 .cse8 .cse3) (and .cse8 .cse3 .cse1) (and .cse2 .cse6 .cse3 .cse4 .cse5) (and .cse6 .cse8 .cse3 .cse5) (and .cse7 .cse0 .cse8))) [2021-11-25 19:42:55,525 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-25 19:42:55,525 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 561) no Hoare annotation was computed. [2021-11-25 19:42:55,525 INFO L858 garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed. [2021-11-25 19:42:55,525 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-25 19:42:55,525 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-25 19:42:55,526 INFO L858 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-25 19:42:55,526 INFO L858 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-25 19:42:55,526 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-25 19:42:55,526 INFO L858 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-25 19:42:55,529 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:42:55,531 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:42:55,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:42:55 BoogieIcfgContainer [2021-11-25 19:42:55,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:42:55,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:42:55,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:42:55,551 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:42:55,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:42:46" (3/4) ... [2021-11-25 19:42:55,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:42:55,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2021-11-25 19:42:55,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-25 19:42:55,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-25 19:42:55,581 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:42:55,736 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:42:55,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:42:55,738 INFO L158 Benchmark]: Toolchain (without parser) took 11083.78ms. Allocated memory was 109.1MB in the beginning and 224.4MB in the end (delta: 115.3MB). Free memory was 67.3MB in the beginning and 100.8MB in the end (delta: -33.5MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. [2021-11-25 19:42:55,738 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:42:55,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.46ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 11.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:42:55,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.72ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 61.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 19:42:55,740 INFO L158 Benchmark]: Boogie Preprocessor took 57.74ms. Allocated memory is still 109.1MB. Free memory was 61.4MB in the beginning and 56.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:42:55,741 INFO L158 Benchmark]: RCFGBuilder took 1451.64ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 56.9MB in the beginning and 91.2MB in the end (delta: -34.3MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-11-25 19:42:55,741 INFO L158 Benchmark]: TraceAbstraction took 8664.92ms. Allocated memory was 132.1MB in the beginning and 224.4MB in the end (delta: 92.3MB). Free memory was 91.2MB in the beginning and 116.7MB in the end (delta: -25.5MB). Peak memory consumption was 125.2MB. Max. memory is 16.1GB. [2021-11-25 19:42:55,742 INFO L158 Benchmark]: Witness Printer took 186.31ms. Allocated memory is still 224.4MB. Free memory was 116.7MB in the beginning and 100.8MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 19:42:55,744 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 109.1MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.46ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 11.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.72ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 61.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.74ms. Allocated memory is still 109.1MB. Free memory was 61.4MB in the beginning and 56.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1451.64ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 56.9MB in the beginning and 91.2MB in the end (delta: -34.3MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8664.92ms. Allocated memory was 132.1MB in the beginning and 224.4MB in the end (delta: 92.3MB). Free memory was 91.2MB in the beginning and 116.7MB in the end (delta: -25.5MB). Peak memory consumption was 125.2MB. Max. memory is 16.1GB. * Witness Printer took 186.31ms. Allocated memory is still 224.4MB. Free memory was 116.7MB in the beginning and 100.8MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. 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 - PositiveResult [Line: 561]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 849 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 849 mSDsluCounter, 584 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 711 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2650 IncrementalHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 711 mSolverCounterUnsat, 529 mSDtfsCounter, 2650 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=8, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 249 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2288 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1673 NumberOfCodeBlocks, 1673 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1661 ConstructedInterpolants, 0 QuantifiedInterpolants, 7809 SizeOfPredicates, 0 NumberOfNonLiveVariables, 946 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 1286/1436 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a21 <= 0 && a16 <= 5) || (((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a20 == 1) && a16 == 4)) || ((((!(a20 == 1) && !(a7 == 1)) && a21 == 1) && a17 == 1) && a16 <= 5)) || (((a16 == 6 && !(a7 == 1)) && a21 == 1) && a17 == 1)) || (((a16 == 6 && !(a7 == 1)) && a17 <= 0) && a21 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((((a12 == 8 && !(a7 == 1)) && a21 == 1) && a17 == 1) && a20 == 1)) || (((!(a7 == 1) && a17 <= 0) && a21 == 1) && a20 == 1)) || ((a16 == 6 && a21 <= 0) && a17 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((a21 <= 0 && a16 <= 5) || (((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a20 == 1) && a16 == 4)) || ((((!(a20 == 1) && !(a7 == 1)) && a21 == 1) && a17 == 1) && a16 <= 5)) || (((a16 == 6 && !(a7 == 1)) && a21 == 1) && a17 == 1)) || (((a16 == 6 && !(a7 == 1)) && a17 <= 0) && a21 == 1)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((((a12 == 8 && !(a7 == 1)) && a21 == 1) && a17 == 1) && a20 == 1)) || (((!(a7 == 1) && a17 <= 0) && a21 == 1) && a20 == 1)) || ((a16 == 6 && a21 <= 0) && a17 <= 0) RESULT: Ultimate proved your program to be correct! [2021-11-25 19:42:55,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc59e1ff-f628-4fe8-9155-3d59cbb7b2bb/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 Writing output log to file Ultimate.log Result: TRUE