./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label55.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_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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 eb1378ae256d4f0b4a7126643513eaf232a83d7c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:32:59,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:59,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:59,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:59,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:59,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:59,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:59,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:59,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:59,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:59,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:59,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:59,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:59,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:59,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:59,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:59,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:59,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:59,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:59,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:59,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:59,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:59,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:59,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:59,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:59,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:59,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:59,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:59,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:59,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:59,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:59,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:59,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:59,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:59,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:59,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:59,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:59,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:59,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:59,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:59,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:59,528 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:59,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:59,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:59,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:59,560 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:59,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:59,560 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:59,560 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:59,560 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:59,561 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:59,561 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:59,561 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:59,561 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:59,562 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:59,562 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:59,562 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:59,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:59,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:59,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:59,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:59,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:59,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:59,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:59,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:59,565 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:59,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:59,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:59,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:59,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:59,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:59,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:59,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:59,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:59,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:59,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:59,567 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:59,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:59,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:59,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:59,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:59,568 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_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb1378ae256d4f0b4a7126643513eaf232a83d7c [2021-10-11 02:32:59,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:59,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:59,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:59,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:59,949 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:59,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label55.c [2021-10-11 02:33:00,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/data/3052056a9/71c5fc3250de4145bd41a1a17dbf59eb/FLAGcfa9cae7c [2021-10-11 02:33:00,755 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:33:00,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/sv-benchmarks/c/eca-rers2012/Problem02_label55.c [2021-10-11 02:33:00,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/data/3052056a9/71c5fc3250de4145bd41a1a17dbf59eb/FLAGcfa9cae7c [2021-10-11 02:33:00,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/data/3052056a9/71c5fc3250de4145bd41a1a17dbf59eb [2021-10-11 02:33:00,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:33:00,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:33:00,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:00,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:33:00,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:33:00,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d33f0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:00, skipping insertion in model container [2021-10-11 02:33:00,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:33:00" (1/1) ... [2021-10-11 02:33:00,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:33:01,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:33:01,443 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_4bea7b7a-b02e-418b-ba3f-ca84294e0660/sv-benchmarks/c/eca-rers2012/Problem02_label55.c[17358,17371] [2021-10-11 02:33:01,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:01,505 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:33:01,672 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_4bea7b7a-b02e-418b-ba3f-ca84294e0660/sv-benchmarks/c/eca-rers2012/Problem02_label55.c[17358,17371] [2021-10-11 02:33:01,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:33:01,735 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:33:01,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01 WrapperNode [2021-10-11 02:33:01,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:33:01,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:01,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:33:01,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:33:01,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:33:01,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:33:01,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:33:01,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:33:01,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... [2021-10-11 02:33:01,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:33:01,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:33:01,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:33:01,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:33:01,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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 02:33:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:33:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:33:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:33:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:33:04,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:33:04,727 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:33:04,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:04 BoogieIcfgContainer [2021-10-11 02:33:04,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:33:04,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:33:04,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:33:04,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:33:04,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:33:00" (1/3) ... [2021-10-11 02:33:04,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302911a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:04, skipping insertion in model container [2021-10-11 02:33:04,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:33:01" (2/3) ... [2021-10-11 02:33:04,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302911a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:33:04, skipping insertion in model container [2021-10-11 02:33:04,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:04" (3/3) ... [2021-10-11 02:33:04,748 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2021-10-11 02:33:04,764 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:33:04,769 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:33:04,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:33:04,825 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:33:04,826 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:33:04,826 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:33:04,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:33:04,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:33:04,827 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:33:04,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:33:04,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:33:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:33:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:33:04,860 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:04,861 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 02:33:04,862 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:04,869 INFO L82 PathProgramCache]: Analyzing trace with hash 925946887, now seen corresponding path program 1 times [2021-10-11 02:33:04,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:04,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192820579] [2021-10-11 02:33:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:05,337 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 02:33:05,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192820579] [2021-10-11 02:33:05,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:05,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:05,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478152274] [2021-10-11 02:33:05,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:05,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:05,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:05,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:05,365 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:33:05,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:05,946 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:33:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:05,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:33:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:05,976 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:33:05,977 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:33:05,980 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 02:33:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:33:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:33:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:33:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2021-10-11 02:33:06,062 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2021-10-11 02:33:06,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:06,063 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2021-10-11 02:33:06,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:06,063 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2021-10-11 02:33:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:33:06,072 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:06,073 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:06,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:33:06,073 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 221747366, now seen corresponding path program 1 times [2021-10-11 02:33:06,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:06,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332979097] [2021-10-11 02:33:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:06,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332979097] [2021-10-11 02:33:06,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:06,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:06,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126497386] [2021-10-11 02:33:06,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:06,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:06,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:06,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:06,167 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2021-10-11 02:33:06,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:06,745 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2021-10-11 02:33:06,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:06,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:33:06,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:06,750 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:33:06,750 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:33:06,752 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 02:33:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:33:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:33:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:33:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2021-10-11 02:33:06,776 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 98 [2021-10-11 02:33:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:06,777 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2021-10-11 02:33:06,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2021-10-11 02:33:06,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-11 02:33:06,784 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:06,784 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:06,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:33:06,784 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:06,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1583675958, now seen corresponding path program 1 times [2021-10-11 02:33:06,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:06,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927827658] [2021-10-11 02:33:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:06,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927827658] [2021-10-11 02:33:06,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:06,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:33:06,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952264408] [2021-10-11 02:33:06,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:06,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:06,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:06,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:06,875 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand 3 states. [2021-10-11 02:33:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:07,156 INFO L93 Difference]: Finished difference Result 645 states and 945 transitions. [2021-10-11 02:33:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:07,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2021-10-11 02:33:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:07,158 INFO L225 Difference]: With dead ends: 645 [2021-10-11 02:33:07,158 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:33:07,160 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 02:33:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:33:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:33:07,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:33:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 433 transitions. [2021-10-11 02:33:07,183 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 433 transitions. Word has length 99 [2021-10-11 02:33:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:07,183 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 433 transitions. [2021-10-11 02:33:07,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 433 transitions. [2021-10-11 02:33:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:33:07,190 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:07,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:07,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:33:07,190 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:07,191 INFO L82 PathProgramCache]: Analyzing trace with hash -2134435777, now seen corresponding path program 1 times [2021-10-11 02:33:07,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:07,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024439400] [2021-10-11 02:33:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:07,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024439400] [2021-10-11 02:33:07,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:07,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:07,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341291025] [2021-10-11 02:33:07,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:07,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:07,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:07,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:07,314 INFO L87 Difference]: Start difference. First operand 323 states and 433 transitions. Second operand 3 states. [2021-10-11 02:33:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:07,777 INFO L93 Difference]: Finished difference Result 725 states and 980 transitions. [2021-10-11 02:33:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:07,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:33:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:07,781 INFO L225 Difference]: With dead ends: 725 [2021-10-11 02:33:07,781 INFO L226 Difference]: Without dead ends: 403 [2021-10-11 02:33:07,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:07,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-11 02:33:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-11 02:33:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:33:07,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2021-10-11 02:33:07,805 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 103 [2021-10-11 02:33:07,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:07,806 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2021-10-11 02:33:07,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:07,806 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2021-10-11 02:33:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:33:07,810 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:07,810 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:07,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:33:07,811 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:07,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2118178295, now seen corresponding path program 1 times [2021-10-11 02:33:07,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:07,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996168099] [2021-10-11 02:33:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:33:08,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996168099] [2021-10-11 02:33:08,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866005903] [2021-10-11 02:33:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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 02:33:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:08,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:33:08,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:33:08,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:33:08,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:08,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:33:08,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47582837] [2021-10-11 02:33:08,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:08,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:08,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:08,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:08,723 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand 3 states. [2021-10-11 02:33:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:09,210 INFO L93 Difference]: Finished difference Result 1125 states and 1466 transitions. [2021-10-11 02:33:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:09,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:33:09,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:09,219 INFO L225 Difference]: With dead ends: 1125 [2021-10-11 02:33:09,220 INFO L226 Difference]: Without dead ends: 723 [2021-10-11 02:33:09,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-11 02:33:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-11 02:33:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2021-10-11 02:33:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 923 transitions. [2021-10-11 02:33:09,259 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 923 transitions. Word has length 107 [2021-10-11 02:33:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:09,263 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 923 transitions. [2021-10-11 02:33:09,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 923 transitions. [2021-10-11 02:33:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-11 02:33:09,272 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:09,272 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2021-10-11 02:33:09,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:09,489 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:09,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1094933143, now seen corresponding path program 1 times [2021-10-11 02:33:09,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:09,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053099668] [2021-10-11 02:33:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:33:09,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053099668] [2021-10-11 02:33:09,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077479388] [2021-10-11 02:33:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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 02:33:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:09,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:33:09,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:33:09,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:33:10,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:10,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-11 02:33:10,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471055758] [2021-10-11 02:33:10,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:10,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:10,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:10,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:10,009 INFO L87 Difference]: Start difference. First operand 723 states and 923 transitions. Second operand 3 states. [2021-10-11 02:33:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:10,419 INFO L93 Difference]: Finished difference Result 1525 states and 1985 transitions. [2021-10-11 02:33:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:10,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2021-10-11 02:33:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:10,426 INFO L225 Difference]: With dead ends: 1525 [2021-10-11 02:33:10,427 INFO L226 Difference]: Without dead ends: 883 [2021-10-11 02:33:10,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-11 02:33:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 643. [2021-10-11 02:33:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:33:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 828 transitions. [2021-10-11 02:33:10,451 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 828 transitions. Word has length 121 [2021-10-11 02:33:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:10,453 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 828 transitions. [2021-10-11 02:33:10,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 828 transitions. [2021-10-11 02:33:10,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-11 02:33:10,455 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:10,455 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:33:10,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:10,669 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:10,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1534356932, now seen corresponding path program 1 times [2021-10-11 02:33:10,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:10,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068127489] [2021-10-11 02:33:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:33:10,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068127489] [2021-10-11 02:33:10,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:10,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:10,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218237751] [2021-10-11 02:33:10,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:10,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:10,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:10,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:10,772 INFO L87 Difference]: Start difference. First operand 643 states and 828 transitions. Second operand 3 states. [2021-10-11 02:33:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:11,247 INFO L93 Difference]: Finished difference Result 1525 states and 1976 transitions. [2021-10-11 02:33:11,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:11,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2021-10-11 02:33:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:11,253 INFO L225 Difference]: With dead ends: 1525 [2021-10-11 02:33:11,255 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:33:11,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:33:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-10-11 02:33:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:33:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 928 transitions. [2021-10-11 02:33:11,283 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 928 transitions. Word has length 133 [2021-10-11 02:33:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:11,284 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 928 transitions. [2021-10-11 02:33:11,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 928 transitions. [2021-10-11 02:33:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-11 02:33:11,287 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:11,287 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:11,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:33:11,288 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:11,288 INFO L82 PathProgramCache]: Analyzing trace with hash 867759995, now seen corresponding path program 1 times [2021-10-11 02:33:11,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:11,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837914575] [2021-10-11 02:33:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-11 02:33:11,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837914575] [2021-10-11 02:33:11,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729558262] [2021-10-11 02:33:11,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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 02:33:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:11,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:33:11,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-11 02:33:11,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-10-11 02:33:11,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:11,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:33:11,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155200265] [2021-10-11 02:33:11,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:11,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:11,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:11,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:11,915 INFO L87 Difference]: Start difference. First operand 803 states and 928 transitions. Second operand 3 states. [2021-10-11 02:33:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:12,287 INFO L93 Difference]: Finished difference Result 1685 states and 1939 transitions. [2021-10-11 02:33:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:12,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2021-10-11 02:33:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:12,292 INFO L225 Difference]: With dead ends: 1685 [2021-10-11 02:33:12,292 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:33:12,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 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 02:33:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:33:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:33:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:33:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 725 transitions. [2021-10-11 02:33:12,314 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 725 transitions. Word has length 154 [2021-10-11 02:33:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:12,315 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 725 transitions. [2021-10-11 02:33:12,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 725 transitions. [2021-10-11 02:33:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-10-11 02:33:12,318 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:12,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-11 02:33:12,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:12,533 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:12,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:12,533 INFO L82 PathProgramCache]: Analyzing trace with hash 201168417, now seen corresponding path program 1 times [2021-10-11 02:33:12,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:12,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287522433] [2021-10-11 02:33:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:33:12,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287522433] [2021-10-11 02:33:12,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675254083] [2021-10-11 02:33:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/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 02:33:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:12,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:33:12,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-10-11 02:33:13,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-10-11 02:33:13,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:13,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:33:13,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832040822] [2021-10-11 02:33:13,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:13,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:13,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:13,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:13,182 INFO L87 Difference]: Start difference. First operand 643 states and 725 transitions. Second operand 3 states. [2021-10-11 02:33:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:13,593 INFO L93 Difference]: Finished difference Result 1285 states and 1449 transitions. [2021-10-11 02:33:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:13,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2021-10-11 02:33:13,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:13,605 INFO L225 Difference]: With dead ends: 1285 [2021-10-11 02:33:13,605 INFO L226 Difference]: Without dead ends: 1283 [2021-10-11 02:33:13,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:33:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-10-11 02:33:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1283. [2021-10-11 02:33:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2021-10-11 02:33:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1447 transitions. [2021-10-11 02:33:13,646 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1447 transitions. Word has length 165 [2021-10-11 02:33:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:13,646 INFO L481 AbstractCegarLoop]: Abstraction has 1283 states and 1447 transitions. [2021-10-11 02:33:13,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:13,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1447 transitions. [2021-10-11 02:33:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-10-11 02:33:13,652 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:13,652 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:13,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:13,865 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:13,865 INFO L82 PathProgramCache]: Analyzing trace with hash -809748624, now seen corresponding path program 1 times [2021-10-11 02:33:13,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:13,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188714414] [2021-10-11 02:33:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 96 proven. 8 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-10-11 02:33:14,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188714414] [2021-10-11 02:33:14,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537946603] [2021-10-11 02:33:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:14,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:33:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-11 02:33:14,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-11 02:33:14,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:14,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:33:14,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515543630] [2021-10-11 02:33:14,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:14,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:14,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:14,584 INFO L87 Difference]: Start difference. First operand 1283 states and 1447 transitions. Second operand 3 states. [2021-10-11 02:33:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:14,977 INFO L93 Difference]: Finished difference Result 2805 states and 3177 transitions. [2021-10-11 02:33:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:14,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2021-10-11 02:33:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:14,988 INFO L225 Difference]: With dead ends: 2805 [2021-10-11 02:33:14,988 INFO L226 Difference]: Without dead ends: 1523 [2021-10-11 02:33:14,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 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 02:33:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-11 02:33:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-10-11 02:33:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2021-10-11 02:33:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1687 transitions. [2021-10-11 02:33:15,034 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1687 transitions. Word has length 198 [2021-10-11 02:33:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:15,034 INFO L481 AbstractCegarLoop]: Abstraction has 1523 states and 1687 transitions. [2021-10-11 02:33:15,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1687 transitions. [2021-10-11 02:33:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-10-11 02:33:15,040 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:15,041 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:33:15,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:33:15,261 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:15,261 INFO L82 PathProgramCache]: Analyzing trace with hash -132741960, now seen corresponding path program 1 times [2021-10-11 02:33:15,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:15,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685128998] [2021-10-11 02:33:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 128 proven. 8 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-10-11 02:33:15,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685128998] [2021-10-11 02:33:15,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834222418] [2021-10-11 02:33:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:15,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:33:15,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:33:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-10-11 02:33:15,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:33:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-10-11 02:33:15,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:33:15,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:33:15,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875299310] [2021-10-11 02:33:15,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:15,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:15,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:15,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:15,997 INFO L87 Difference]: Start difference. First operand 1523 states and 1687 transitions. Second operand 3 states. [2021-10-11 02:33:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:16,353 INFO L93 Difference]: Finished difference Result 3365 states and 3718 transitions. [2021-10-11 02:33:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:16,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2021-10-11 02:33:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:16,363 INFO L225 Difference]: With dead ends: 3365 [2021-10-11 02:33:16,363 INFO L226 Difference]: Without dead ends: 1523 [2021-10-11 02:33:16,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:33:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-11 02:33:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1123. [2021-10-11 02:33:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2021-10-11 02:33:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1205 transitions. [2021-10-11 02:33:16,400 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1205 transitions. Word has length 226 [2021-10-11 02:33:16,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:16,401 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1205 transitions. [2021-10-11 02:33:16,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1205 transitions. [2021-10-11 02:33:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-10-11 02:33:16,408 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:16,408 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:16,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:33:16,637 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:16,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:16,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1377224096, now seen corresponding path program 1 times [2021-10-11 02:33:16,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:16,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300771568] [2021-10-11 02:33:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-11 02:33:16,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300771568] [2021-10-11 02:33:16,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:16,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:33:16,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336347647] [2021-10-11 02:33:16,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:33:16,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:16,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:33:16,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:16,873 INFO L87 Difference]: Start difference. First operand 1123 states and 1205 transitions. Second operand 4 states. [2021-10-11 02:33:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:17,374 INFO L93 Difference]: Finished difference Result 2005 states and 2155 transitions. [2021-10-11 02:33:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:33:17,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 308 [2021-10-11 02:33:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:17,381 INFO L225 Difference]: With dead ends: 2005 [2021-10-11 02:33:17,382 INFO L226 Difference]: Without dead ends: 1123 [2021-10-11 02:33:17,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:33:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-11 02:33:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-11 02:33:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2021-10-11 02:33:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1199 transitions. [2021-10-11 02:33:17,414 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1199 transitions. Word has length 308 [2021-10-11 02:33:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:17,415 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1199 transitions. [2021-10-11 02:33:17,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:33:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1199 transitions. [2021-10-11 02:33:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-10-11 02:33:17,423 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:17,424 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:17,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:33:17,424 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:17,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:17,425 INFO L82 PathProgramCache]: Analyzing trace with hash 744690565, now seen corresponding path program 1 times [2021-10-11 02:33:17,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:17,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294931368] [2021-10-11 02:33:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-10-11 02:33:17,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294931368] [2021-10-11 02:33:17,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:17,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:17,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811503139] [2021-10-11 02:33:17,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:17,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:17,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:17,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:17,699 INFO L87 Difference]: Start difference. First operand 1123 states and 1199 transitions. Second operand 3 states. [2021-10-11 02:33:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:17,980 INFO L93 Difference]: Finished difference Result 2165 states and 2313 transitions. [2021-10-11 02:33:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:17,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 358 [2021-10-11 02:33:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:17,986 INFO L225 Difference]: With dead ends: 2165 [2021-10-11 02:33:17,987 INFO L226 Difference]: Without dead ends: 803 [2021-10-11 02:33:17,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-11 02:33:18,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2021-10-11 02:33:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:33:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 847 transitions. [2021-10-11 02:33:18,010 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 847 transitions. Word has length 358 [2021-10-11 02:33:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:18,011 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 847 transitions. [2021-10-11 02:33:18,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 847 transitions. [2021-10-11 02:33:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-10-11 02:33:18,018 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:33:18,019 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:33:18,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:33:18,019 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:33:18,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:33:18,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1569403783, now seen corresponding path program 1 times [2021-10-11 02:33:18,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:33:18,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338329977] [2021-10-11 02:33:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:33:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:33:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-10-11 02:33:18,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338329977] [2021-10-11 02:33:18,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:33:18,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:33:18,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212016972] [2021-10-11 02:33:18,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:33:18,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:33:18,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:33:18,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:18,309 INFO L87 Difference]: Start difference. First operand 803 states and 847 transitions. Second operand 3 states. [2021-10-11 02:33:18,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:33:18,602 INFO L93 Difference]: Finished difference Result 1363 states and 1444 transitions. [2021-10-11 02:33:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:33:18,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2021-10-11 02:33:18,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:33:18,604 INFO L225 Difference]: With dead ends: 1363 [2021-10-11 02:33:18,604 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:33:18,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:33:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:33:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:33:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:33:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:33:18,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2021-10-11 02:33:18,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:33:18,607 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:33:18,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:33:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:33:18,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:33:18,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:33:18,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:33:18,964 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-10-11 02:33:19,250 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-10-11 02:33:19,253 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:33:19,253 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:33:19,254 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:33:19,254 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:33:19,254 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:33:19,254 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:33:19,254 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:33:19,254 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:33:19,254 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:33:19,255 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:33:19,256 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:33:19,256 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:33:19,256 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:33:19,256 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:33:19,256 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:33:19,256 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:33:19,256 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:33:19,257 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:33:19,257 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:33:19,257 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:33:19,257 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:33:19,257 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:33:19,257 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:33:19,257 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 497) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:33:19,258 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:33:19,259 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= ~a11~0 0)) (.cse7 (<= ~a19~0 0)) (.cse5 (<= ~a28~0 7)) (.cse8 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse0 (<= 9 ~a28~0)) (.cse9 (<= ~a17~0 7)) (.cse1 (= ~a19~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse4 .cse2) (and .cse6 .cse7 .cse8 .cse4 .cse2 .cse3) (and .cse6 .cse1 .cse5 .cse2) (and .cse1 .cse5 .cse9) (and .cse7 .cse5 .cse2) (and (= ~a11~0 1) .cse5 .cse2) (and .cse1 .cse8 .cse4 .cse2) (and .cse0 .cse9 .cse3) (and (not .cse1) .cse2 (<= ~a25~0 0) .cse3))) [2021-10-11 02:33:19,260 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:33:19,260 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:33:19,260 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:33:19,260 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:33:19,260 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:33:19,260 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:33:19,260 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:33:19,261 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:33:19,261 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:33:19,261 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:33:19,261 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:33:19,261 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= ~a11~0 0)) (.cse7 (<= ~a19~0 0)) (.cse5 (<= ~a28~0 7)) (.cse8 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse0 (<= 9 ~a28~0)) (.cse9 (<= ~a17~0 7)) (.cse1 (= ~a19~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2) (and .cse6 .cse1 .cse4 .cse2) (and .cse6 .cse7 .cse8 .cse4 .cse2 .cse3) (and .cse6 .cse1 .cse5 .cse2) (and .cse1 .cse5 .cse9) (and .cse7 .cse5 .cse2) (and (= ~a11~0 1) .cse5 .cse2) (and .cse1 .cse8 .cse4 .cse2) (and .cse0 .cse9 .cse3) (and (not .cse1) .cse2 (<= ~a25~0 0) .cse3))) [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:33:19,262 INFO L262 CegarLoopResult]: For program point L493-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:33:19,263 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:33:19,263 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:33:19,263 INFO L262 CegarLoopResult]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:33:19,263 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:33:19,263 INFO L262 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2021-10-11 02:33:19,263 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:33:19,263 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:33:19,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:33:19 BoogieIcfgContainer [2021-10-11 02:33:19,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:33:19,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:33:19,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:33:19,305 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:33:19,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:33:04" (3/4) ... [2021-10-11 02:33:19,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:33:19,341 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:33:19,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:33:19,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:33:19,347 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:33:19,482 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bea7b7a-b02e-418b-ba3f-ca84294e0660/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:33:19,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:33:19,483 INFO L168 Benchmark]: Toolchain (without parser) took 18526.44 ms. Allocated memory was 113.2 MB in the beginning and 423.6 MB in the end (delta: 310.4 MB). Free memory was 74.4 MB in the beginning and 150.2 MB in the end (delta: -75.7 MB). Peak memory consumption was 233.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:19,484 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 87.5 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:33:19,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.60 ms. Allocated memory is still 113.2 MB. Free memory was 74.1 MB in the beginning and 71.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:19,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.73 ms. Allocated memory is still 113.2 MB. Free memory was 71.7 MB in the beginning and 66.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:19,485 INFO L168 Benchmark]: Boogie Preprocessor took 124.47 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 62.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:19,485 INFO L168 Benchmark]: RCFGBuilder took 2748.53 ms. Allocated memory was 113.2 MB in the beginning and 165.7 MB in the end (delta: 52.4 MB). Free memory was 62.1 MB in the beginning and 102.8 MB in the end (delta: -40.7 MB). Peak memory consumption was 78.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:19,486 INFO L168 Benchmark]: TraceAbstraction took 14566.03 ms. Allocated memory was 165.7 MB in the beginning and 423.6 MB in the end (delta: 257.9 MB). Free memory was 101.7 MB in the beginning and 164.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 194.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:19,486 INFO L168 Benchmark]: Witness Printer took 177.58 ms. Allocated memory is still 423.6 MB. Free memory was 164.8 MB in the beginning and 150.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:33:19,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 87.5 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 774.60 ms. Allocated memory is still 113.2 MB. Free memory was 74.1 MB in the beginning and 71.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 121.73 ms. Allocated memory is still 113.2 MB. Free memory was 71.7 MB in the beginning and 66.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 124.47 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 62.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2748.53 ms. Allocated memory was 113.2 MB in the beginning and 165.7 MB in the end (delta: 52.4 MB). Free memory was 62.1 MB in the beginning and 102.8 MB in the end (delta: -40.7 MB). Peak memory consumption was 78.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14566.03 ms. Allocated memory was 165.7 MB in the beginning and 423.6 MB in the end (delta: 257.9 MB). Free memory was 101.7 MB in the beginning and 164.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 194.8 MB. Max. memory is 16.1 GB. * Witness Printer took 177.58 ms. Allocated memory is still 423.6 MB. Free memory was 164.8 MB in the beginning and 150.2 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: 497]: 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: ((((((((((((9 <= a28 && a19 == 1) && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a11 <= 0 && a19 == 1) && a25 == 1) && a17 <= 8)) || (((((a11 <= 0 && a19 <= 0) && 10 <= a28) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a11 <= 0 && a19 == 1) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((a19 <= 0 && a28 <= 7) && a17 <= 8)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 10 <= a28) && a25 == 1) && a17 <= 8)) || ((9 <= a28 && a17 <= 7) && a28 <= 10)) || (((!(a19 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((9 <= a28 && a19 == 1) && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 7) && a17 <= 8)) || (((a11 <= 0 && a19 == 1) && a25 == 1) && a17 <= 8)) || (((((a11 <= 0 && a19 <= 0) && 10 <= a28) && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((a11 <= 0 && a19 == 1) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && a28 <= 7) && a17 <= 7)) || ((a19 <= 0 && a28 <= 7) && a17 <= 8)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 10 <= a28) && a25 == 1) && a17 <= 8)) || ((9 <= a28 && a17 <= 7) && a28 <= 10)) || (((!(a19 == 1) && a17 <= 8) && a25 <= 0) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.7s, OverallIterations: 14, TraceHistogramMax: 8, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1066 SDtfs, 735 SDslu, 79 SDs, 0 SdLazy, 2910 SolverSat, 494 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1974 GetRequests, 1938 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1523occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 640 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 273 HoareAnnotationTreeSize, 3 FomulaSimplifications, 984 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 306 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 3484 NumberOfCodeBlocks, 3484 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 4429 ConstructedInterpolants, 0 QuantifiedInterpolants, 1915047 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2162 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 26 InterpolantComputations, 20 PerfectInterpolantSequences, 5076/5202 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...