./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI --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 a83405447735331b883b1abbbdcfee86db37bc76 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:04,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:04,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:04,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:04,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:04,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:04,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:04,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:04,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:04,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:04,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:04,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:04,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:04,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:04,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:04,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:04,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:04,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:04,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:04,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:04,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:04,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:04,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:04,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:04,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:04,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:04,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:04,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:04,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:04,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:04,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:04,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:04,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:04,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:04,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:04,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:04,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:04,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:04,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:04,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:04,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:04,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:04,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:04,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:04,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:04,505 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:04,505 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:04,505 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:04,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:04,506 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:04,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:04,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:04,513 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:04,514 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:04,514 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:04,514 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:04,514 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:04,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:04,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:04,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:04,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:04,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:04,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:04,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:04,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:04,517 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:04,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:04,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:04,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:04,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:04,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:04,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:04,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:04,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:04,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:04,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:04,521 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:04,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:04,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:04,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:04,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:04,522 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_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a83405447735331b883b1abbbdcfee86db37bc76 [2021-10-11 02:28:04,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:04,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:04,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:04,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:04,835 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:04,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c [2021-10-11 02:28:04,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/data/f286de61e/b99ab5c1112d426e8ed2a6738eac2ab7/FLAGd18b86e0e [2021-10-11 02:28:05,446 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:05,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/sv-benchmarks/c/eca-rers2012/Problem02_label05.c [2021-10-11 02:28:05,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/data/f286de61e/b99ab5c1112d426e8ed2a6738eac2ab7/FLAGd18b86e0e [2021-10-11 02:28:05,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/data/f286de61e/b99ab5c1112d426e8ed2a6738eac2ab7 [2021-10-11 02:28:05,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:05,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:05,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:05,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:05,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:05,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21251ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:05, skipping insertion in model container [2021-10-11 02:28:05,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:05" (1/1) ... [2021-10-11 02:28:05,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:05,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:06,159 WARN L226 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_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/sv-benchmarks/c/eca-rers2012/Problem02_label05.c[19738,19751] [2021-10-11 02:28:06,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:06,202 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:06,331 WARN L226 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_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/sv-benchmarks/c/eca-rers2012/Problem02_label05.c[19738,19751] [2021-10-11 02:28:06,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:06,381 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:06,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06 WrapperNode [2021-10-11 02:28:06,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:06,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:06,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:06,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:06,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:06,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:06,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:06,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:06,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... [2021-10-11 02:28:06,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:06,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:06,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:06,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:06,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:06,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:08,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:08,786 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:08,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:08 BoogieIcfgContainer [2021-10-11 02:28:08,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:08,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:08,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:08,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:08,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:05" (1/3) ... [2021-10-11 02:28:08,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab50dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:08, skipping insertion in model container [2021-10-11 02:28:08,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:06" (2/3) ... [2021-10-11 02:28:08,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ab50dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:08, skipping insertion in model container [2021-10-11 02:28:08,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:08" (3/3) ... [2021-10-11 02:28:08,802 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2021-10-11 02:28:08,819 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:08,823 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:08,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:08,875 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:08,875 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:08,875 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:08,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:08,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:08,876 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:08,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:08,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:28:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:28:08,899 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:08,900 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:08,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:08,906 INFO L82 PathProgramCache]: Analyzing trace with hash 925959951, now seen corresponding path program 1 times [2021-10-11 02:28:08,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:08,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4059623] [2021-10-11 02:28:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:09,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4059623] [2021-10-11 02:28:09,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:09,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:09,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794850387] [2021-10-11 02:28:09,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:09,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:09,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:09,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:09,340 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:28:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:09,871 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:28:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:09,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:28:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:09,900 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:28:09,900 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:28:09,903 INFO L677 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 [2021-10-11 02:28:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:28:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:28:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:28:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-11 02:28:09,984 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-11 02:28:09,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:09,985 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-11 02:28:09,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-11 02:28:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:28:09,991 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:09,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-10-11 02:28:09,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:09,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:09,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:09,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1028680708, now seen corresponding path program 1 times [2021-10-11 02:28:09,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:09,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542740783] [2021-10-11 02:28:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:10,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542740783] [2021-10-11 02:28:10,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:10,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:10,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208848441] [2021-10-11 02:28:10,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:10,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:10,104 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2021-10-11 02:28:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:10,573 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-11 02:28:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:10,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:28:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:10,579 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:28:10,579 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:28:10,581 INFO L677 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 [2021-10-11 02:28:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:28:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:28:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:28:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-11 02:28:10,612 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-11 02:28:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:10,613 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-11 02:28:10,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-11 02:28:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-11 02:28:10,621 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:10,622 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:10,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:10,622 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:10,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2137930589, now seen corresponding path program 1 times [2021-10-11 02:28:10,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:10,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845921071] [2021-10-11 02:28:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:10,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845921071] [2021-10-11 02:28:10,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036979882] [2021-10-11 02:28:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:10,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:10,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:28:11,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:28:11,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:11,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:28:11,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135441778] [2021-10-11 02:28:11,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:11,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:11,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:11,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:11,262 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2021-10-11 02:28:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:11,757 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2021-10-11 02:28:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:11,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2021-10-11 02:28:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:11,763 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:28:11,763 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:28:11,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:11,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:28:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2021-10-11 02:28:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:28:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2021-10-11 02:28:11,792 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2021-10-11 02:28:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:11,793 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2021-10-11 02:28:11,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2021-10-11 02:28:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:28:11,795 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:11,795 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2021-10-11 02:28:12,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:28:12,008 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:12,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1427737257, now seen corresponding path program 1 times [2021-10-11 02:28:12,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:12,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346912381] [2021-10-11 02:28:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:12,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346912381] [2021-10-11 02:28:12,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:12,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:12,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591603391] [2021-10-11 02:28:12,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:12,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:12,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:12,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:12,058 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2021-10-11 02:28:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:12,309 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2021-10-11 02:28:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:12,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:28:12,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:12,313 INFO L225 Difference]: With dead ends: 805 [2021-10-11 02:28:12,313 INFO L226 Difference]: Without dead ends: 403 [2021-10-11 02:28:12,314 INFO L677 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 [2021-10-11 02:28:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-11 02:28:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-11 02:28:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:28:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2021-10-11 02:28:12,327 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2021-10-11 02:28:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:12,328 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2021-10-11 02:28:12,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:12,328 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2021-10-11 02:28:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:28:12,329 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:12,330 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2021-10-11 02:28:12,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:12,330 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:12,330 INFO L82 PathProgramCache]: Analyzing trace with hash -440294309, now seen corresponding path program 1 times [2021-10-11 02:28:12,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:12,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761227452] [2021-10-11 02:28:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:28:12,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761227452] [2021-10-11 02:28:12,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:12,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:12,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067997338] [2021-10-11 02:28:12,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:12,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:12,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:12,463 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2021-10-11 02:28:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:12,864 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2021-10-11 02:28:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:12,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:28:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:12,868 INFO L225 Difference]: With dead ends: 885 [2021-10-11 02:28:12,868 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:28:12,869 INFO L677 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 [2021-10-11 02:28:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:28:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2021-10-11 02:28:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2021-10-11 02:28:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2021-10-11 02:28:12,883 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2021-10-11 02:28:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:12,883 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2021-10-11 02:28:12,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2021-10-11 02:28:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-11 02:28:12,885 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:12,886 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:28:12,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:28:12,886 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:12,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1423413009, now seen corresponding path program 1 times [2021-10-11 02:28:12,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:12,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294892529] [2021-10-11 02:28:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:28:12,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294892529] [2021-10-11 02:28:12,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120257700] [2021-10-11 02:28:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:13,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:13,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-11 02:28:13,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-11 02:28:13,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:13,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:28:13,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054334032] [2021-10-11 02:28:13,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:13,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:13,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:13,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:13,492 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2021-10-11 02:28:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:13,951 INFO L93 Difference]: Finished difference Result 1285 states and 1916 transitions. [2021-10-11 02:28:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:13,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2021-10-11 02:28:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:13,957 INFO L225 Difference]: With dead ends: 1285 [2021-10-11 02:28:13,957 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:28:13,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:28:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2021-10-11 02:28:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:28:13,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2021-10-11 02:28:13,983 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 133 [2021-10-11 02:28:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:13,984 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2021-10-11 02:28:13,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2021-10-11 02:28:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-10-11 02:28:13,987 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:13,987 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-10-11 02:28:14,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:14,215 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1552918860, now seen corresponding path program 1 times [2021-10-11 02:28:14,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:14,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650063850] [2021-10-11 02:28:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-11 02:28:14,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650063850] [2021-10-11 02:28:14,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352161864] [2021-10-11 02:28:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:14,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:14,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-11 02:28:14,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-11 02:28:15,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:15,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:28:15,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622798494] [2021-10-11 02:28:15,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:15,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:15,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:15,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:15,004 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand 3 states. [2021-10-11 02:28:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:15,445 INFO L93 Difference]: Finished difference Result 1605 states and 2230 transitions. [2021-10-11 02:28:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:15,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2021-10-11 02:28:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:15,451 INFO L225 Difference]: With dead ends: 1605 [2021-10-11 02:28:15,451 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:28:15,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:28:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:28:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:28:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 830 transitions. [2021-10-11 02:28:15,472 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 830 transitions. Word has length 181 [2021-10-11 02:28:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:15,472 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 830 transitions. [2021-10-11 02:28:15,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 830 transitions. [2021-10-11 02:28:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-10-11 02:28:15,475 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:15,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:15,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:15,691 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:15,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1544670670, now seen corresponding path program 1 times [2021-10-11 02:28:15,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:15,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869069213] [2021-10-11 02:28:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-11 02:28:15,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869069213] [2021-10-11 02:28:15,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:15,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:15,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394381618] [2021-10-11 02:28:15,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:15,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:15,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:15,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:15,807 INFO L87 Difference]: Start difference. First operand 643 states and 830 transitions. Second operand 5 states. [2021-10-11 02:28:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:16,534 INFO L93 Difference]: Finished difference Result 1392 states and 1816 transitions. [2021-10-11 02:28:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:28:16,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2021-10-11 02:28:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:16,540 INFO L225 Difference]: With dead ends: 1392 [2021-10-11 02:28:16,540 INFO L226 Difference]: Without dead ends: 664 [2021-10-11 02:28:16,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-11 02:28:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 643. [2021-10-11 02:28:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:28:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 781 transitions. [2021-10-11 02:28:16,561 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 781 transitions. Word has length 183 [2021-10-11 02:28:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:16,561 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 781 transitions. [2021-10-11 02:28:16,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 781 transitions. [2021-10-11 02:28:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-10-11 02:28:16,564 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:16,566 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:16,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:28:16,570 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash -612516968, now seen corresponding path program 1 times [2021-10-11 02:28:16,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:16,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893189392] [2021-10-11 02:28:16,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-10-11 02:28:16,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893189392] [2021-10-11 02:28:16,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333048081] [2021-10-11 02:28:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:16,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:28:16,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-10-11 02:28:17,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-10-11 02:28:17,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:28:17,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:28:17,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702933302] [2021-10-11 02:28:17,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:17,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:17,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:17,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:17,263 INFO L87 Difference]: Start difference. First operand 643 states and 781 transitions. Second operand 3 states. [2021-10-11 02:28:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:17,617 INFO L93 Difference]: Finished difference Result 1363 states and 1674 transitions. [2021-10-11 02:28:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:17,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2021-10-11 02:28:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:17,618 INFO L225 Difference]: With dead ends: 1363 [2021-10-11 02:28:17,619 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:28:17,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:28:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:28:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:28:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:28:17,621 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2021-10-11 02:28:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:17,622 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:28:17,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:28:17,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:28:17,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:17,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:28:18,112 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:28:18,113 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:28:18,113 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:28:18,113 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:28:18,113 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:28:18,113 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:28:18,113 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:28:18,114 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:28:18,115 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:28:18,115 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:28:18,115 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:28:18,115 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:28:18,115 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:28:18,115 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:28:18,115 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:28:18,116 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:28:18,117 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:28:18,117 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:28:18,117 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:28:18,117 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:28:18,117 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:28:18,117 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:28:18,117 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 560) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:28:18,118 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:28:18,119 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:28:18,119 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:28:18,119 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:28:18,119 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:28:18,119 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:28:18,119 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:28:18,119 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:28:18,120 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:28:18,120 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse0 (= ~a19~0 1))) (or (and .cse0 (= ~a21~0 1) (<= 8 ~a17~0) .cse1) (and (<= ~a28~0 9) .cse1) (and (<= ~a19~0 0) .cse1) (and .cse0 (= ~a25~0 0) (<= ~a17~0 7)))) [2021-10-11 02:28:18,120 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:28:18,120 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:28:18,120 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:28:18,121 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:28:18,122 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= ~a17~0 8)) (.cse0 (= ~a19~0 1))) (or (and .cse0 (= ~a21~0 1) (<= 8 ~a17~0) .cse1) (and (<= ~a28~0 9) .cse1) (and (<= ~a19~0 0) .cse1) (and .cse0 (= ~a25~0 0) (<= ~a17~0 7)))) [2021-10-11 02:28:18,122 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:28:18,122 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:28:18,122 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:28:18,122 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:28:18,122 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L556-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:28:18,123 INFO L262 CegarLoopResult]: For program point L559-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:28:18,124 INFO L262 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2021-10-11 02:28:18,124 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:28:18,124 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:28:18,124 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:28:18,124 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:28:18,124 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:28:18,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:18 BoogieIcfgContainer [2021-10-11 02:28:18,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:18,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:18,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:18,143 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:18,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:08" (3/4) ... [2021-10-11 02:28:18,146 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:28:18,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:28:18,170 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:28:18,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:28:18,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:28:18,304 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0f6fbd4-211d-45b5-a81c-5f1e14858feb/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:18,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:18,306 INFO L168 Benchmark]: Toolchain (without parser) took 12570.19 ms. Allocated memory was 117.4 MB in the beginning and 308.3 MB in the end (delta: 190.8 MB). Free memory was 76.0 MB in the beginning and 133.9 MB in the end (delta: -57.9 MB). Peak memory consumption was 131.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:18,307 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory is still 94.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:18,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.29 ms. Allocated memory is still 117.4 MB. Free memory was 75.8 MB in the beginning and 76.5 MB in the end (delta: -641.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:18,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.94 ms. Allocated memory is still 117.4 MB. Free memory was 76.5 MB in the beginning and 71.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:18,308 INFO L168 Benchmark]: Boogie Preprocessor took 77.03 ms. Allocated memory is still 117.4 MB. Free memory was 71.1 MB in the beginning and 66.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:18,308 INFO L168 Benchmark]: RCFGBuilder took 2248.51 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 66.9 MB in the beginning and 88.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:18,309 INFO L168 Benchmark]: TraceAbstraction took 9348.00 ms. Allocated memory was 146.8 MB in the beginning and 308.3 MB in the end (delta: 161.5 MB). Free memory was 88.7 MB in the beginning and 148.5 MB in the end (delta: -59.8 MB). Peak memory consumption was 101.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:18,309 INFO L168 Benchmark]: Witness Printer took 162.70 ms. Allocated memory is still 308.3 MB. Free memory was 148.5 MB in the beginning and 133.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:18,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory is still 94.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 645.29 ms. Allocated memory is still 117.4 MB. Free memory was 75.8 MB in the beginning and 76.5 MB in the end (delta: -641.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.94 ms. Allocated memory is still 117.4 MB. Free memory was 76.5 MB in the beginning and 71.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.03 ms. Allocated memory is still 117.4 MB. Free memory was 71.1 MB in the beginning and 66.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2248.51 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 66.9 MB in the beginning and 88.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9348.00 ms. Allocated memory was 146.8 MB in the beginning and 308.3 MB in the end (delta: 161.5 MB). Free memory was 88.7 MB in the beginning and 148.5 MB in the end (delta: -59.8 MB). Peak memory consumption was 101.6 MB. Max. memory is 16.1 GB. * Witness Printer took 162.70 ms. Allocated memory is still 308.3 MB. Free memory was 148.5 MB in the beginning and 133.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 560]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || (a28 <= 9 && a17 <= 8)) || (a19 <= 0 && a17 <= 8)) || ((a19 == 1 && a25 == 0) && a17 <= 7) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a19 == 1 && a21 == 1) && 8 <= a17) && a17 <= 8) || (a28 <= 9 && a17 <= 8)) || (a19 <= 0 && a17 <= 8)) || ((a19 == 1 && a25 == 0) && a17 <= 7) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.9s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 477 SDtfs, 662 SDslu, 57 SDs, 0 SdLazy, 2175 SolverSat, 600 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1199 GetRequests, 1173 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 261 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 77 HoareAnnotationTreeSize, 3 FomulaSimplifications, 960 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 136 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1729 NumberOfCodeBlocks, 1729 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2302 ConstructedInterpolants, 0 QuantifiedInterpolants, 682364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1512 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1697/1714 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...