./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8 --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 c3bec4a19ad486e7769a1ae863b766e21c94d89f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:45:10,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:45:10,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:45:11,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:45:11,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:45:11,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:45:11,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:45:11,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:45:11,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:45:11,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:45:11,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:45:11,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:45:11,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:45:11,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:45:11,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:45:11,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:45:11,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:45:11,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:45:11,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:45:11,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:45:11,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:45:11,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:45:11,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:45:11,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:45:11,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:45:11,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:45:11,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:45:11,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:45:11,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:45:11,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:45:11,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:45:11,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:45:11,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:45:11,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:45:11,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:45:11,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:45:11,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:45:11,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:45:11,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:45:11,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:45:11,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:45:11,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:45:11,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:45:11,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:45:11,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:45:11,099 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:45:11,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:45:11,100 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:45:11,100 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:45:11,100 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:45:11,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:45:11,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:45:11,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:45:11,102 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:45:11,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:45:11,103 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:45:11,103 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:45:11,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:45:11,104 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:45:11,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:45:11,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:45:11,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:45:11,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:45:11,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:45:11,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:45:11,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:45:11,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:45:11,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:45:11,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:45:11,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:45:11,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:45:11,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:45:11,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:11,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:45:11,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:45:11,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:45:11,110 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:45:11,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:45:11,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:45:11,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:45:11,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:45:11,112 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_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3bec4a19ad486e7769a1ae863b766e21c94d89f [2021-10-13 07:45:11,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:45:11,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:45:11,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:45:11,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:45:11,500 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:45:11,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2021-10-13 07:45:11,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/data/f66279e28/aa0ff28a4fe8449293aa78023cbf3766/FLAGbac5db20a [2021-10-13 07:45:12,367 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:45:12,368 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2021-10-13 07:45:12,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/data/f66279e28/aa0ff28a4fe8449293aa78023cbf3766/FLAGbac5db20a [2021-10-13 07:45:12,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/data/f66279e28/aa0ff28a4fe8449293aa78023cbf3766 [2021-10-13 07:45:12,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:45:12,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:45:12,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:12,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:45:12,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:45:12,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:12" (1/1) ... [2021-10-13 07:45:12,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9227a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12, skipping insertion in model container [2021-10-13 07:45:12,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:12" (1/1) ... [2021-10-13 07:45:12,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:45:12,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:45:13,075 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2021-10-13 07:45:13,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:13,144 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:45:13,265 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2021-10-13 07:45:13,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:45:13,294 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:45:13,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13 WrapperNode [2021-10-13 07:45:13,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:45:13,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:13,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:45:13,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:45:13,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:45:13,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:45:13,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:45:13,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:45:13,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:45:13,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:45:13,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:45:13,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:45:13,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (1/1) ... [2021-10-13 07:45:13,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:45:13,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:13,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:45:13,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:45:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:45:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:45:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:45:13,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:45:16,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:45:16,102 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:45:16,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:16 BoogieIcfgContainer [2021-10-13 07:45:16,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:45:16,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:45:16,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:45:16,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:45:16,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:12" (1/3) ... [2021-10-13 07:45:16,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48de47e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:16, skipping insertion in model container [2021-10-13 07:45:16,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:13" (2/3) ... [2021-10-13 07:45:16,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48de47e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:16, skipping insertion in model container [2021-10-13 07:45:16,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:16" (3/3) ... [2021-10-13 07:45:16,124 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label09.c [2021-10-13 07:45:16,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:45:16,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:45:16,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:45:16,202 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:45:16,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:45:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 07:45:16,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:16,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:16,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:16,243 INFO L82 PathProgramCache]: Analyzing trace with hash 379026567, now seen corresponding path program 1 times [2021-10-13 07:45:16,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:16,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131578566] [2021-10-13 07:45:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:16,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:45:16,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:16,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131578566] [2021-10-13 07:45:16,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131578566] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:16,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:16,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:16,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149232797] [2021-10-13 07:45:16,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:16,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:16,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:16,722 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:17,196 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-13 07:45:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-13 07:45:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:17,222 INFO L225 Difference]: With dead ends: 224 [2021-10-13 07:45:17,222 INFO L226 Difference]: Without dead ends: 145 [2021-10-13 07:45:17,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-13 07:45:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-13 07:45:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2021-10-13 07:45:17,315 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2021-10-13 07:45:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:17,316 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2021-10-13 07:45:17,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2021-10-13 07:45:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-13 07:45:17,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:17,329 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:17,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:45:17,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:17,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:17,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1189481793, now seen corresponding path program 1 times [2021-10-13 07:45:17,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:17,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246597086] [2021-10-13 07:45:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:17,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:45:17,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:17,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246597086] [2021-10-13 07:45:17,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246597086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:17,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:17,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:17,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265392490] [2021-10-13 07:45:17,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:17,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:17,620 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:18,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:18,143 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2021-10-13 07:45:18,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-13 07:45:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:18,154 INFO L225 Difference]: With dead ends: 431 [2021-10-13 07:45:18,155 INFO L226 Difference]: Without dead ends: 287 [2021-10-13 07:45:18,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-13 07:45:18,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-13 07:45:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-13 07:45:18,203 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2021-10-13 07:45:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:18,204 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-13 07:45:18,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-13 07:45:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 07:45:18,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:18,209 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:18,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:45:18,210 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:18,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1933824523, now seen corresponding path program 1 times [2021-10-13 07:45:18,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:18,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503710541] [2021-10-13 07:45:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:18,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 07:45:18,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:18,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503710541] [2021-10-13 07:45:18,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503710541] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:18,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:18,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:18,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899443623] [2021-10-13 07:45:18,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:18,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:18,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:18,405 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:18,868 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2021-10-13 07:45:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-13 07:45:18,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:18,879 INFO L225 Difference]: With dead ends: 715 [2021-10-13 07:45:18,879 INFO L226 Difference]: Without dead ends: 429 [2021-10-13 07:45:18,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:18,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-13 07:45:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-13 07:45:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2021-10-13 07:45:18,909 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2021-10-13 07:45:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2021-10-13 07:45:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2021-10-13 07:45:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-13 07:45:18,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:18,916 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:18,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:45:18,917 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:18,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash 218747071, now seen corresponding path program 1 times [2021-10-13 07:45:18,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:18,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62552575] [2021-10-13 07:45:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:18,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 07:45:19,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:19,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62552575] [2021-10-13 07:45:19,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62552575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:19,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:19,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:19,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165809632] [2021-10-13 07:45:19,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:19,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:19,026 INFO L87 Difference]: Start difference. First operand 358 states and 587 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:19,398 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2021-10-13 07:45:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-10-13 07:45:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:19,403 INFO L225 Difference]: With dead ends: 715 [2021-10-13 07:45:19,403 INFO L226 Difference]: Without dead ends: 358 [2021-10-13 07:45:19,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-13 07:45:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-13 07:45:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-13 07:45:19,439 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2021-10-13 07:45:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:19,440 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-13 07:45:19,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-13 07:45:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-13 07:45:19,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:19,445 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:19,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:45:19,446 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:19,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:19,447 INFO L82 PathProgramCache]: Analyzing trace with hash 674880759, now seen corresponding path program 1 times [2021-10-13 07:45:19,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:19,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404947512] [2021-10-13 07:45:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:19,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-13 07:45:19,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:19,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404947512] [2021-10-13 07:45:19,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404947512] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:19,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:19,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:19,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268014457] [2021-10-13 07:45:19,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:19,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:19,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:19,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:19,531 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:19,912 INFO L93 Difference]: Finished difference Result 857 states and 1369 transitions. [2021-10-13 07:45:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-10-13 07:45:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:19,915 INFO L225 Difference]: With dead ends: 857 [2021-10-13 07:45:19,916 INFO L226 Difference]: Without dead ends: 500 [2021-10-13 07:45:19,917 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-13 07:45:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-10-13 07:45:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5210420841683367) internal successors, (759), 499 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2021-10-13 07:45:19,940 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 113 [2021-10-13 07:45:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:19,940 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2021-10-13 07:45:19,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2021-10-13 07:45:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 07:45:19,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:19,944 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-10-13 07:45:19,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:45:19,945 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:19,945 INFO L82 PathProgramCache]: Analyzing trace with hash -692380491, now seen corresponding path program 1 times [2021-10-13 07:45:19,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:19,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167405076] [2021-10-13 07:45:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:19,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-13 07:45:20,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:20,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167405076] [2021-10-13 07:45:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167405076] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:20,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:20,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:20,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313773474] [2021-10-13 07:45:20,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:20,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:20,061 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:20,484 INFO L93 Difference]: Finished difference Result 1354 states and 2016 transitions. [2021-10-13 07:45:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-10-13 07:45:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:20,490 INFO L225 Difference]: With dead ends: 1354 [2021-10-13 07:45:20,491 INFO L226 Difference]: Without dead ends: 855 [2021-10-13 07:45:20,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-13 07:45:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-10-13 07:45:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2021-10-13 07:45:20,515 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 122 [2021-10-13 07:45:20,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:20,516 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2021-10-13 07:45:20,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2021-10-13 07:45:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-13 07:45:20,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:20,519 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:45:20,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:45:20,520 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:20,520 INFO L82 PathProgramCache]: Analyzing trace with hash 240375995, now seen corresponding path program 1 times [2021-10-13 07:45:20,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:20,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092944926] [2021-10-13 07:45:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:20,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-13 07:45:20,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:20,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092944926] [2021-10-13 07:45:20,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092944926] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:20,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:20,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:45:20,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326632213] [2021-10-13 07:45:20,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:20,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:20,586 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:20,867 INFO L93 Difference]: Finished difference Result 1354 states and 2010 transitions. [2021-10-13 07:45:20,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:20,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-10-13 07:45:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:20,872 INFO L225 Difference]: With dead ends: 1354 [2021-10-13 07:45:20,872 INFO L226 Difference]: Without dead ends: 713 [2021-10-13 07:45:20,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:20,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-13 07:45:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2021-10-13 07:45:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4578651685393258) internal successors, (1038), 712 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1038 transitions. [2021-10-13 07:45:20,897 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1038 transitions. Word has length 138 [2021-10-13 07:45:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:20,897 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1038 transitions. [2021-10-13 07:45:20,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:20,898 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1038 transitions. [2021-10-13 07:45:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-13 07:45:20,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:20,901 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:20,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:45:20,901 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:20,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1229087077, now seen corresponding path program 1 times [2021-10-13 07:45:20,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:20,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375467924] [2021-10-13 07:45:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:20,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 07:45:21,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:21,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375467924] [2021-10-13 07:45:21,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375467924] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:21,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:21,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:21,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479997136] [2021-10-13 07:45:21,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:21,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:21,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:21,049 INFO L87 Difference]: Start difference. First operand 713 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:21,521 INFO L93 Difference]: Finished difference Result 1780 states and 2557 transitions. [2021-10-13 07:45:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:21,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-13 07:45:21,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:21,530 INFO L225 Difference]: With dead ends: 1780 [2021-10-13 07:45:21,530 INFO L226 Difference]: Without dead ends: 997 [2021-10-13 07:45:21,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-13 07:45:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-13 07:45:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2432432432432432) internal successors, (1150), 925 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1150 transitions. [2021-10-13 07:45:21,561 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1150 transitions. Word has length 154 [2021-10-13 07:45:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:21,563 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1150 transitions. [2021-10-13 07:45:21,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1150 transitions. [2021-10-13 07:45:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-13 07:45:21,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:21,568 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:45:21,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:45:21,568 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:21,569 INFO L82 PathProgramCache]: Analyzing trace with hash -937095303, now seen corresponding path program 1 times [2021-10-13 07:45:21,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:21,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274832042] [2021-10-13 07:45:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:21,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-13 07:45:21,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:21,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274832042] [2021-10-13 07:45:21,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274832042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:21,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:21,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:45:21,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997760562] [2021-10-13 07:45:21,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:21,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:21,673 INFO L87 Difference]: Start difference. First operand 926 states and 1150 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:22,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:22,096 INFO L93 Difference]: Finished difference Result 2064 states and 2553 transitions. [2021-10-13 07:45:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-10-13 07:45:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:22,103 INFO L225 Difference]: With dead ends: 2064 [2021-10-13 07:45:22,104 INFO L226 Difference]: Without dead ends: 1139 [2021-10-13 07:45:22,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-13 07:45:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 926. [2021-10-13 07:45:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.1978378378378378) internal successors, (1108), 925 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1108 transitions. [2021-10-13 07:45:22,145 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1108 transitions. Word has length 177 [2021-10-13 07:45:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:22,145 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1108 transitions. [2021-10-13 07:45:22,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1108 transitions. [2021-10-13 07:45:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-13 07:45:22,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:22,150 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 07:45:22,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:45:22,151 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:22,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:22,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1287882552, now seen corresponding path program 1 times [2021-10-13 07:45:22,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:22,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633277347] [2021-10-13 07:45:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:22,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-10-13 07:45:22,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:22,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633277347] [2021-10-13 07:45:22,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633277347] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:22,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:22,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:22,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106487618] [2021-10-13 07:45:22,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:45:22,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:45:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:22,240 INFO L87 Difference]: Start difference. First operand 926 states and 1108 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:22,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:22,661 INFO L93 Difference]: Finished difference Result 1922 states and 2305 transitions. [2021-10-13 07:45:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:45:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-10-13 07:45:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:22,670 INFO L225 Difference]: With dead ends: 1922 [2021-10-13 07:45:22,670 INFO L226 Difference]: Without dead ends: 997 [2021-10-13 07:45:22,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:45:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-13 07:45:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-13 07:45:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.179718875502008) internal successors, (1175), 996 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1175 transitions. [2021-10-13 07:45:22,700 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1175 transitions. Word has length 202 [2021-10-13 07:45:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:22,704 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1175 transitions. [2021-10-13 07:45:22,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1175 transitions. [2021-10-13 07:45:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-13 07:45:22,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:22,710 INFO L512 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:22,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:45:22,711 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:22,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:22,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1529633432, now seen corresponding path program 1 times [2021-10-13 07:45:22,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:22,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463188045] [2021-10-13 07:45:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:22,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-13 07:45:22,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:22,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463188045] [2021-10-13 07:45:22,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463188045] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:22,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:22,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:45:22,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194077373] [2021-10-13 07:45:22,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:22,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:22,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:22,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:22,809 INFO L87 Difference]: Start difference. First operand 997 states and 1175 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:23,078 INFO L93 Difference]: Finished difference Result 2206 states and 2603 transitions. [2021-10-13 07:45:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:23,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-10-13 07:45:23,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:23,086 INFO L225 Difference]: With dead ends: 2206 [2021-10-13 07:45:23,086 INFO L226 Difference]: Without dead ends: 1210 [2021-10-13 07:45:23,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:45:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-13 07:45:23,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-13 07:45:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.1678383128295255) internal successors, (1329), 1138 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1329 transitions. [2021-10-13 07:45:23,126 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1329 transitions. Word has length 233 [2021-10-13 07:45:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:23,126 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1329 transitions. [2021-10-13 07:45:23,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1329 transitions. [2021-10-13 07:45:23,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-10-13 07:45:23,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:45:23,133 INFO L512 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:45:23,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:45:23,133 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:45:23,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:45:23,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1886816815, now seen corresponding path program 1 times [2021-10-13 07:45:23,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:45:23,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382995430] [2021-10-13 07:45:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:23,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:45:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-13 07:45:23,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:45:23,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382995430] [2021-10-13 07:45:23,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382995430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:45:23,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724824623] [2021-10-13 07:45:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:45:23,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:45:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:45:23,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:45:23,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:45:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:45:23,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:45:23,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:45:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-13 07:45:24,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:45:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-13 07:45:25,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724824623] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:45:25,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:45:25,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-13 07:45:25,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690948608] [2021-10-13 07:45:25,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:45:25,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:45:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:45:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:25,083 INFO L87 Difference]: Start difference. First operand 1139 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:45:25,362 INFO L93 Difference]: Finished difference Result 1352 states and 1558 transitions. [2021-10-13 07:45:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:45:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-10-13 07:45:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:45:25,363 INFO L225 Difference]: With dead ends: 1352 [2021-10-13 07:45:25,363 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:45:25,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:45:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:45:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:45:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:45:25,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2021-10-13 07:45:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:45:25,366 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:45:25,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:45:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:45:25,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:45:25,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:45:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:25,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 07:45:25,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:45:25,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:45:25,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:45:25,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:45:25,734 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-13 07:45:25,734 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-13 07:45:25,734 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-13 07:45:25,734 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-13 07:45:25,734 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-13 07:45:25,735 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-13 07:45:25,735 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-13 07:45:25,735 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-13 07:45:25,735 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-13 07:45:25,735 INFO L857 garLoopResultBuilder]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-10-13 07:45:25,735 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-13 07:45:25,736 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-13 07:45:25,736 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-13 07:45:25,736 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-13 07:45:25,737 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-13 07:45:25,737 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-13 07:45:25,737 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-13 07:45:25,737 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-13 07:45:25,737 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-13 07:45:25,738 INFO L857 garLoopResultBuilder]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-10-13 07:45:25,738 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-13 07:45:25,738 INFO L857 garLoopResultBuilder]: For program point L540(line 540) no Hoare annotation was computed. [2021-10-13 07:45:25,738 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-13 07:45:25,738 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-13 07:45:25,738 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-13 07:45:25,740 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-13 07:45:25,740 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-13 07:45:25,740 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-13 07:45:25,740 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-13 07:45:25,740 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-13 07:45:25,741 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-13 07:45:25,741 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-13 07:45:25,741 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-13 07:45:25,741 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-13 07:45:25,741 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-13 07:45:25,741 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-13 07:45:25,741 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-13 07:45:25,742 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-13 07:45:25,742 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-13 07:45:25,742 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:45:25,743 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-13 07:45:25,743 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-13 07:45:25,743 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-13 07:45:25,743 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse1 (<= ~a16~0 5))) (or (and (<= 14 ~a8~0) .cse0 .cse1) (and .cse0 (<= 15 ~a8~0)) (and .cse0 (<= ~a16~0 4)) (= ~a20~0 1) (and (= ~a17~0 1) .cse1))) [2021-10-13 07:45:25,744 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-13 07:45:25,744 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-13 07:45:25,744 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-13 07:45:25,744 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-13 07:45:25,744 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-13 07:45:25,744 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-13 07:45:25,745 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-13 07:45:25,745 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:45:25,745 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-13 07:45:25,747 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-13 07:45:25,747 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-13 07:45:25,747 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-13 07:45:25,748 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-13 07:45:25,748 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-13 07:45:25,748 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-13 07:45:25,748 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-13 07:45:25,748 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-13 07:45:25,748 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-13 07:45:25,749 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-13 07:45:25,749 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-13 07:45:25,749 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-13 07:45:25,749 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-13 07:45:25,749 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-13 07:45:25,749 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse1 (<= ~a16~0 5))) (or (and (<= 14 ~a8~0) .cse0 .cse1) (and .cse0 (<= 15 ~a8~0)) (and .cse0 (<= ~a16~0 4)) (= ~a20~0 1) (and (= ~a17~0 1) .cse1))) [2021-10-13 07:45:25,750 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-13 07:45:25,750 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 540) no Hoare annotation was computed. [2021-10-13 07:45:25,750 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-13 07:45:25,750 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-13 07:45:25,751 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-13 07:45:25,751 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-13 07:45:25,751 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-13 07:45:25,751 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-13 07:45:25,755 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:45:25,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:45:25 BoogieIcfgContainer [2021-10-13 07:45:25,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:45:25,785 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:45:25,785 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:45:25,785 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:45:25,785 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:16" (3/4) ... [2021-10-13 07:45:25,788 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:45:25,821 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 107 nodes and edges [2021-10-13 07:45:25,822 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-13 07:45:25,824 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 07:45:25,826 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:45:25,970 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:45:25,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:45:25,972 INFO L168 Benchmark]: Toolchain (without parser) took 13448.41 ms. Allocated memory was 100.7 MB in the beginning and 245.4 MB in the end (delta: 144.7 MB). Free memory was 56.5 MB in the beginning and 168.5 MB in the end (delta: -112.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:25,972 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 75.0 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:45:25,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.14 ms. Allocated memory is still 100.7 MB. Free memory was 56.3 MB in the beginning and 59.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:25,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.01 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 53.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:25,974 INFO L168 Benchmark]: Boogie Preprocessor took 92.36 ms. Allocated memory is still 100.7 MB. Free memory was 53.2 MB in the beginning and 49.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:25,974 INFO L168 Benchmark]: RCFGBuilder took 2587.66 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 48.8 MB in the beginning and 65.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:25,975 INFO L168 Benchmark]: TraceAbstraction took 9674.46 ms. Allocated memory was 138.4 MB in the beginning and 245.4 MB in the end (delta: 107.0 MB). Free memory was 64.9 MB in the beginning and 183.2 MB in the end (delta: -118.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:45:25,976 INFO L168 Benchmark]: Witness Printer took 185.70 ms. Allocated memory is still 245.4 MB. Free memory was 183.2 MB in the beginning and 168.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:25,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 75.0 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 771.14 ms. Allocated memory is still 100.7 MB. Free memory was 56.3 MB in the beginning and 59.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.01 ms. Allocated memory is still 100.7 MB. Free memory was 59.0 MB in the beginning and 53.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.36 ms. Allocated memory is still 100.7 MB. Free memory was 53.2 MB in the beginning and 49.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2587.66 ms. Allocated memory was 100.7 MB in the beginning and 138.4 MB in the end (delta: 37.7 MB). Free memory was 48.8 MB in the beginning and 65.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9674.46 ms. Allocated memory was 138.4 MB in the beginning and 245.4 MB in the end (delta: 107.0 MB). Free memory was 64.9 MB in the beginning and 183.2 MB in the end (delta: -118.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 185.70 ms. Allocated memory is still 245.4 MB. Free memory was 183.2 MB in the beginning and 168.5 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 540]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9567.2ms, OverallIterations: 12, TraceHistogramMax: 7, EmptinessCheckTime: 63.9ms, AutomataDifference: 4962.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 144.4ms, InitialAbstractionConstructionTime: 16.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 460 SDtfs, 807 SDslu, 60 SDs, 0 SdLazy, 2930 SolverSat, 720 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3418.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=11, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 368.2ms AutomataMinimizationTime, 12 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 71 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2628 FormulaSimplificationTreeSizeReduction, 57.9ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 78.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 169.4ms SsaConstructionTime, 588.2ms SatisfiabilityAnalysisTime, 2662.1ms InterpolantComputationTime, 2009 NumberOfCodeBlocks, 2009 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2250 ConstructedInterpolants, 0 QuantifiedInterpolants, 5840 SizeOfPredicates, 0 NumberOfNonLiveVariables, 504 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 2243/2346 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((14 <= a8 && a21 == 1) && a16 <= 5) || (a21 == 1 && 15 <= a8)) || (a21 == 1 && a16 <= 4)) || a20 == 1) || (a17 == 1 && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((14 <= a8 && a21 == 1) && a16 <= 5) || (a21 == 1 && 15 <= a8)) || (a21 == 1 && a16 <= 4)) || a20 == 1) || (a17 == 1 && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:45:26,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14be8540-b56e-4528-bc55-ddc9c538c794/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...