./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.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_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/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_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/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_16c917e1-c277-470b-bd25-44c17d951490/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 32dcd17dd6150ce526d1225c284848d771c5c1e8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:15:27,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:15:27,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:15:27,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:15:27,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:15:27,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:15:27,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:15:27,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:15:27,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:15:27,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:15:27,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:15:27,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:15:27,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:15:27,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:15:27,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:15:27,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:15:27,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:15:27,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:15:27,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:15:27,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:15:27,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:15:27,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:15:27,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:15:27,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:15:27,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:15:27,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:15:27,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:15:27,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:15:27,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:15:27,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:15:27,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:15:27,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:15:27,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:15:27,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:15:27,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:15:27,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:15:27,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:15:27,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:15:27,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:15:27,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:15:27,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:15:27,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:15:27,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:15:27,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:15:27,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:15:27,620 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:15:27,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:15:27,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:15:27,621 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:15:27,621 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:15:27,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:15:27,630 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:15:27,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:15:27,632 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:15:27,632 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:15:27,633 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:15:27,633 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:15:27,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:15:27,634 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:15:27,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:15:27,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:15:27,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:15:27,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:15:27,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:15:27,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:15:27,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:15:27,637 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:15:27,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:15:27,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:15:27,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:15:27,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:15:27,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:15:27,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:15:27,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:15:27,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:15:27,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:15:27,643 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:15:27,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:15:27,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:15:27,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:15:27,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:15:27,644 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_16c917e1-c277-470b-bd25-44c17d951490/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32dcd17dd6150ce526d1225c284848d771c5c1e8 [2021-10-13 07:15:28,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:15:28,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:15:28,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:15:28,100 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:15:28,100 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:15:28,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2021-10-13 07:15:28,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/data/af5d6dd85/fba452c0340240509cc1969b148e0d86/FLAG2e9008f5a [2021-10-13 07:15:29,036 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:15:29,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/sv-benchmarks/c/eca-rers2012/Problem01_label59.c [2021-10-13 07:15:29,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/data/af5d6dd85/fba452c0340240509cc1969b148e0d86/FLAG2e9008f5a [2021-10-13 07:15:29,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/data/af5d6dd85/fba452c0340240509cc1969b148e0d86 [2021-10-13 07:15:29,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:15:29,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:15:29,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:15:29,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:15:29,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:15:29,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:29" (1/1) ... [2021-10-13 07:15:29,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dec115c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:29, skipping insertion in model container [2021-10-13 07:15:29,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:15:29" (1/1) ... [2021-10-13 07:15:29,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:15:29,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:15:29,749 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_16c917e1-c277-470b-bd25-44c17d951490/sv-benchmarks/c/eca-rers2012/Problem01_label59.c[16624,16637] [2021-10-13 07:15:29,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:15:29,855 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:15:30,012 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_16c917e1-c277-470b-bd25-44c17d951490/sv-benchmarks/c/eca-rers2012/Problem01_label59.c[16624,16637] [2021-10-13 07:15:30,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:15:30,060 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:15:30,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30 WrapperNode [2021-10-13 07:15:30,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:15:30,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:15:30,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:15:30,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:15:30,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:15:30,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:15:30,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:15:30,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:15:30,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:15:30,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:15:30,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:15:30,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:15:30,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (1/1) ... [2021-10-13 07:15:30,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:15:30,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:15:30,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:15:30,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:15:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:15:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:15:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:15:30,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:15:32,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:15:32,553 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:15:32,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:32 BoogieIcfgContainer [2021-10-13 07:15:32,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:15:32,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:15:32,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:15:32,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:15:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:15:29" (1/3) ... [2021-10-13 07:15:32,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ae536a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:32, skipping insertion in model container [2021-10-13 07:15:32,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:15:30" (2/3) ... [2021-10-13 07:15:32,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ae536a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:15:32, skipping insertion in model container [2021-10-13 07:15:32,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:32" (3/3) ... [2021-10-13 07:15:32,568 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label59.c [2021-10-13 07:15:32,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:15:32,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:15:32,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:15:32,687 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 07:15:32,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:15:32,712 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 07:15:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 07:15:32,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:32,722 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 07:15:32,723 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:32,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:32,729 INFO L82 PathProgramCache]: Analyzing trace with hash -104664833, now seen corresponding path program 1 times [2021-10-13 07:15:32,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:32,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464024332] [2021-10-13 07:15:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:32,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:33,199 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 07:15:33,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:33,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464024332] [2021-10-13 07:15:33,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464024332] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:33,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:33,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:15:33,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474576379] [2021-10-13 07:15:33,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:33,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:33,230 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 07:15:33,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:33,748 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-13 07:15:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:33,750 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 07:15:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:33,777 INFO L225 Difference]: With dead ends: 224 [2021-10-13 07:15:33,777 INFO L226 Difference]: Without dead ends: 145 [2021-10-13 07:15:33,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-13 07:15:33,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-13 07:15:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 144 states have internal predecessors, (265), 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 07:15:33,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2021-10-13 07:15:33,842 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2021-10-13 07:15:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:33,844 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2021-10-13 07:15:33,844 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 07:15:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2021-10-13 07:15:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-13 07:15:33,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:33,850 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:33,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:15:33,851 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:33,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:33,852 INFO L82 PathProgramCache]: Analyzing trace with hash -601818414, now seen corresponding path program 1 times [2021-10-13 07:15:33,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:33,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315774552] [2021-10-13 07:15:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:33,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:33,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:33,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315774552] [2021-10-13 07:15:33,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315774552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:33,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:33,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:15:33,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783566676] [2021-10-13 07:15:33,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:33,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:33,933 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 07:15:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:34,377 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2021-10-13 07:15:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2021-10-13 07:15:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:34,382 INFO L225 Difference]: With dead ends: 431 [2021-10-13 07:15:34,383 INFO L226 Difference]: Without dead ends: 287 [2021-10-13 07:15:34,385 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 07:15:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-13 07:15:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-13 07:15:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6993006993006994) internal successors, (486), 286 states have internal predecessors, (486), 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 07:15:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2021-10-13 07:15:34,427 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2021-10-13 07:15:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:34,428 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2021-10-13 07:15:34,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 07:15:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2021-10-13 07:15:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 07:15:34,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:34,438 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:34,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:15:34,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:34,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:34,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1164151984, now seen corresponding path program 1 times [2021-10-13 07:15:34,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:34,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799841939] [2021-10-13 07:15:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:34,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:34,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:34,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799841939] [2021-10-13 07:15:34,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799841939] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:34,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:34,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:34,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525975962] [2021-10-13 07:15:34,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:34,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:34,627 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:35,112 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2021-10-13 07:15:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:35,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-13 07:15:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:35,118 INFO L225 Difference]: With dead ends: 786 [2021-10-13 07:15:35,118 INFO L226 Difference]: Without dead ends: 500 [2021-10-13 07:15:35,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-13 07:15:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2021-10-13 07:15:35,162 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 07:15:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-13 07:15:35,175 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2021-10-13 07:15:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:35,176 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-13 07:15:35,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-13 07:15:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-13 07:15:35,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:35,179 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:35,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:15:35,179 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:35,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:35,180 INFO L82 PathProgramCache]: Analyzing trace with hash -359599295, now seen corresponding path program 1 times [2021-10-13 07:15:35,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:35,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386622198] [2021-10-13 07:15:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:35,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:35,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:35,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386622198] [2021-10-13 07:15:35,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386622198] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:35,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:35,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:15:35,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638516746] [2021-10-13 07:15:35,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:35,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:35,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:35,321 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:35,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:35,742 INFO L93 Difference]: Finished difference Result 1070 states and 1740 transitions. [2021-10-13 07:15:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:35,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-13 07:15:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:35,747 INFO L225 Difference]: With dead ends: 1070 [2021-10-13 07:15:35,748 INFO L226 Difference]: Without dead ends: 642 [2021-10-13 07:15:35,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-13 07:15:35,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-10-13 07:15:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.3213728549141965) internal successors, (847), 641 states have internal predecessors, (847), 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 07:15:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2021-10-13 07:15:35,829 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 84 [2021-10-13 07:15:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:35,829 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2021-10-13 07:15:35,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2021-10-13 07:15:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-13 07:15:35,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:35,840 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:35,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:15:35,841 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:35,842 INFO L82 PathProgramCache]: Analyzing trace with hash -322051027, now seen corresponding path program 1 times [2021-10-13 07:15:35,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:35,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385347077] [2021-10-13 07:15:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:35,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:15:35,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:35,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385347077] [2021-10-13 07:15:35,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385347077] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:35,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:35,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:35,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685495593] [2021-10-13 07:15:35,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:35,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:35,986 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:36,363 INFO L93 Difference]: Finished difference Result 1496 states and 2001 transitions. [2021-10-13 07:15:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:36,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-13 07:15:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:36,371 INFO L225 Difference]: With dead ends: 1496 [2021-10-13 07:15:36,371 INFO L226 Difference]: Without dead ends: 926 [2021-10-13 07:15:36,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-13 07:15:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-13 07:15:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3231162196679438) internal successors, (1036), 783 states have internal predecessors, (1036), 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 07:15:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1036 transitions. [2021-10-13 07:15:36,404 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1036 transitions. Word has length 97 [2021-10-13 07:15:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:36,404 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1036 transitions. [2021-10-13 07:15:36,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:15:36,405 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1036 transitions. [2021-10-13 07:15:36,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-13 07:15:36,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:36,408 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:36,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:15:36,409 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:36,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:36,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1842132004, now seen corresponding path program 1 times [2021-10-13 07:15:36,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:36,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620807433] [2021-10-13 07:15:36,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:36,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:15:36,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:36,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620807433] [2021-10-13 07:15:36,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620807433] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:36,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:36,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:15:36,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826231023] [2021-10-13 07:15:36,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:36,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:36,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:36,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:36,468 INFO L87 Difference]: Start difference. First operand 784 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 07:15:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:36,792 INFO L93 Difference]: Finished difference Result 1567 states and 2086 transitions. [2021-10-13 07:15:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 99 [2021-10-13 07:15:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:36,800 INFO L225 Difference]: With dead ends: 1567 [2021-10-13 07:15:36,800 INFO L226 Difference]: Without dead ends: 855 [2021-10-13 07:15:36,801 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 07:15:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-13 07:15:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2021-10-13 07:15:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3056206088992974) internal successors, (1115), 854 states have internal predecessors, (1115), 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 07:15:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1115 transitions. [2021-10-13 07:15:36,843 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1115 transitions. Word has length 99 [2021-10-13 07:15:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1115 transitions. [2021-10-13 07:15:36,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 07:15:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1115 transitions. [2021-10-13 07:15:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 07:15:36,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:36,847 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:36,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:15:36,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:36,848 INFO L82 PathProgramCache]: Analyzing trace with hash 449338844, now seen corresponding path program 1 times [2021-10-13 07:15:36,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:36,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133974646] [2021-10-13 07:15:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:36,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 07:15:36,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:36,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133974646] [2021-10-13 07:15:36,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133974646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:36,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:36,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:15:36,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888676364] [2021-10-13 07:15:36,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:15:36,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:36,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:15:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:15:36,981 INFO L87 Difference]: Start difference. First operand 855 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 07:15:37,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:37,480 INFO L93 Difference]: Finished difference Result 1780 states and 2335 transitions. [2021-10-13 07:15:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:15:37,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 103 [2021-10-13 07:15:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:37,488 INFO L225 Difference]: With dead ends: 1780 [2021-10-13 07:15:37,489 INFO L226 Difference]: Without dead ends: 997 [2021-10-13 07:15:37,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:15:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-13 07:15:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-13 07:15:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2854054054054054) internal successors, (1189), 925 states have internal predecessors, (1189), 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 07:15:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1189 transitions. [2021-10-13 07:15:37,524 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1189 transitions. Word has length 103 [2021-10-13 07:15:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:37,524 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1189 transitions. [2021-10-13 07:15:37,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 07:15:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1189 transitions. [2021-10-13 07:15:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-13 07:15:37,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:37,530 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:15:37,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:15:37,531 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash 137528059, now seen corresponding path program 1 times [2021-10-13 07:15:37,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:37,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637125050] [2021-10-13 07:15:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:37,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:37,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:37,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637125050] [2021-10-13 07:15:37,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637125050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:15:37,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605922756] [2021-10-13 07:15:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:37,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:15:37,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:15:37,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:15:37,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:15:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:37,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:15:37,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:15:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 07:15:38,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:15:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 07:15:38,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605922756] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:38,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:15:38,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-13 07:15:38,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638401544] [2021-10-13 07:15:38,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:38,769 INFO L87 Difference]: Start difference. First operand 926 states and 1189 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:15:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:39,117 INFO L93 Difference]: Finished difference Result 2064 states and 2729 transitions. [2021-10-13 07:15:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 121 [2021-10-13 07:15:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:39,132 INFO L225 Difference]: With dead ends: 2064 [2021-10-13 07:15:39,133 INFO L226 Difference]: Without dead ends: 1139 [2021-10-13 07:15:39,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-13 07:15:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 855. [2021-10-13 07:15:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2950819672131149) internal successors, (1106), 854 states have internal predecessors, (1106), 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 07:15:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1106 transitions. [2021-10-13 07:15:39,167 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1106 transitions. Word has length 121 [2021-10-13 07:15:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:39,168 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1106 transitions. [2021-10-13 07:15:39,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 07:15:39,169 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1106 transitions. [2021-10-13 07:15:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-13 07:15:39,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:39,173 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:39,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:15:39,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:15:39,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:39,389 INFO L82 PathProgramCache]: Analyzing trace with hash 799432935, now seen corresponding path program 1 times [2021-10-13 07:15:39,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:39,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695011387] [2021-10-13 07:15:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:39,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 07:15:39,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:39,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695011387] [2021-10-13 07:15:39,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695011387] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:39,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:15:39,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:15:39,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764604130] [2021-10-13 07:15:39,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:39,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:15:39,558 INFO L87 Difference]: Start difference. First operand 855 states and 1106 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 07:15:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:39,860 INFO L93 Difference]: Finished difference Result 1638 states and 2137 transitions. [2021-10-13 07:15:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 129 [2021-10-13 07:15:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:39,866 INFO L225 Difference]: With dead ends: 1638 [2021-10-13 07:15:39,866 INFO L226 Difference]: Without dead ends: 855 [2021-10-13 07:15:39,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:15:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-13 07:15:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2021-10-13 07:15:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2014051522248244) internal successors, (1026), 854 states have internal predecessors, (1026), 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 07:15:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1026 transitions. [2021-10-13 07:15:39,901 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1026 transitions. Word has length 129 [2021-10-13 07:15:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:39,902 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1026 transitions. [2021-10-13 07:15:39,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 07:15:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1026 transitions. [2021-10-13 07:15:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-13 07:15:39,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:39,906 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:39,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:15:39,906 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:39,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1049566926, now seen corresponding path program 1 times [2021-10-13 07:15:39,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:39,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298504568] [2021-10-13 07:15:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:39,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:40,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:40,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298504568] [2021-10-13 07:15:40,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298504568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:15:40,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446409105] [2021-10-13 07:15:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:40,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:15:40,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:15:40,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:15:40,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:15:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:40,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:15:40,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:15:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:40,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:15:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:15:41,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446409105] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:41,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:15:41,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-13 07:15:41,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984690249] [2021-10-13 07:15:41,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:41,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:41,219 INFO L87 Difference]: Start difference. First operand 855 states and 1026 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 07:15:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:41,545 INFO L93 Difference]: Finished difference Result 1709 states and 2069 transitions. [2021-10-13 07:15:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 130 [2021-10-13 07:15:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:41,552 INFO L225 Difference]: With dead ends: 1709 [2021-10-13 07:15:41,552 INFO L226 Difference]: Without dead ends: 926 [2021-10-13 07:15:41,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:41,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-13 07:15:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-13 07:15:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.1686182669789227) internal successors, (998), 854 states have internal predecessors, (998), 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 07:15:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 998 transitions. [2021-10-13 07:15:41,583 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 998 transitions. Word has length 130 [2021-10-13 07:15:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:41,584 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 998 transitions. [2021-10-13 07:15:41,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 07:15:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 998 transitions. [2021-10-13 07:15:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-13 07:15:41,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:15:41,588 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:15:41,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:15:41,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 07:15:41,816 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:15:41,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:15:41,817 INFO L82 PathProgramCache]: Analyzing trace with hash -135224303, now seen corresponding path program 1 times [2021-10-13 07:15:41,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:15:41,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101737478] [2021-10-13 07:15:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:41,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:15:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-10-13 07:15:41,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:15:41,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101737478] [2021-10-13 07:15:41,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101737478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:15:41,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108643202] [2021-10-13 07:15:41,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:15:41,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:15:41,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:15:41,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:15:42,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:15:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:15:42,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:15:42,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:15:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-10-13 07:15:42,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:15:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-10-13 07:15:43,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108643202] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:15:43,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:15:43,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-13 07:15:43,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713733968] [2021-10-13 07:15:43,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:15:43,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:15:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:15:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:43,232 INFO L87 Difference]: Start difference. First operand 855 states and 998 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:15:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:15:43,516 INFO L93 Difference]: Finished difference Result 1707 states and 2007 transitions. [2021-10-13 07:15:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:15:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 143 [2021-10-13 07:15:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:15:43,518 INFO L225 Difference]: With dead ends: 1707 [2021-10-13 07:15:43,518 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:15:43,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:15:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:15:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:15:43,520 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 07:15:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:15:43,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2021-10-13 07:15:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:15:43,520 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:15:43,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 07:15:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:15:43,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:15:43,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:15:43,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:15:43,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:15:43,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:15:43,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:15:43,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:15:43,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:15:44,079 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-13 07:15:44,080 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-13 07:15:44,081 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-13 07:15:44,082 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-13 07:15:44,082 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-13 07:15:44,082 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-13 07:15:44,082 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-13 07:15:44,083 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-13 07:15:44,083 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-13 07:15:44,083 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-13 07:15:44,083 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-13 07:15:44,083 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-13 07:15:44,083 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-13 07:15:44,083 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-13 07:15:44,084 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-13 07:15:44,084 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-13 07:15:44,084 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-13 07:15:44,084 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-13 07:15:44,084 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-13 07:15:44,084 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-13 07:15:44,085 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-13 07:15:44,085 INFO L857 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2021-10-13 07:15:44,085 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:15:44,085 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-13 07:15:44,085 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-13 07:15:44,086 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-13 07:15:44,086 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1)) (.cse0 (<= ~a8~0 13)) (.cse9 (<= ~a8~0 14)) (.cse5 (<= ~a16~0 5))) (let ((.cse4 (<= 15 ~a8~0)) (.cse7 (<= ~a17~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a20~0 0)) (.cse8 (or (and .cse9 .cse6) .cse0 (and .cse9 .cse5)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2 .cse4) (and (<= 5 ~a16~0) .cse1 .cse2 .cse5 .cse6) (and .cse7 .cse6) (and .cse3 .cse7 .cse4) (and .cse0 .cse2 .cse6) (and .cse7 .cse8) (and .cse9 .cse1 .cse2 .cse5 .cse6) (and .cse3 .cse8)))) [2021-10-13 07:15:44,086 INFO L857 garLoopResultBuilder]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2021-10-13 07:15:44,086 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-13 07:15:44,086 INFO L857 garLoopResultBuilder]: For program point L453(line 453) no Hoare annotation was computed. [2021-10-13 07:15:44,086 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-13 07:15:44,087 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-13 07:15:44,088 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-13 07:15:44,088 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-13 07:15:44,088 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-13 07:15:44,088 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-13 07:15:44,088 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-13 07:15:44,088 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-13 07:15:44,088 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-13 07:15:44,089 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-13 07:15:44,089 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-13 07:15:44,089 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-13 07:15:44,089 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-13 07:15:44,089 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1)) (.cse0 (<= ~a8~0 13)) (.cse9 (<= ~a8~0 14)) (.cse5 (<= ~a16~0 5))) (let ((.cse4 (<= 15 ~a8~0)) (.cse7 (<= ~a17~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a20~0 0)) (.cse8 (or (and .cse9 .cse6) .cse0 (and .cse9 .cse5)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2 .cse4) (and (<= 5 ~a16~0) .cse1 .cse2 .cse5 .cse6) (and .cse7 .cse6) (and .cse3 .cse7 .cse4) (and .cse0 .cse2 .cse6) (and .cse7 .cse8) (and .cse9 .cse1 .cse2 .cse5 .cse6) (and .cse3 .cse8)))) [2021-10-13 07:15:44,090 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-13 07:15:44,090 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 453) no Hoare annotation was computed. [2021-10-13 07:15:44,090 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-13 07:15:44,090 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-13 07:15:44,090 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-13 07:15:44,090 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-13 07:15:44,090 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-13 07:15:44,091 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-13 07:15:44,095 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:15:44,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:15:44 BoogieIcfgContainer [2021-10-13 07:15:44,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:15:44,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:15:44,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:15:44,112 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:15:44,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:15:32" (3/4) ... [2021-10-13 07:15:44,115 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:15:44,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-13 07:15:44,142 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-13 07:15:44,144 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 07:15:44,146 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:15:44,296 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:15:44,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:15:44,298 INFO L168 Benchmark]: Toolchain (without parser) took 15112.34 ms. Allocated memory was 88.1 MB in the beginning and 207.6 MB in the end (delta: 119.5 MB). Free memory was 50.1 MB in the beginning and 163.7 MB in the end (delta: -113.6 MB). Peak memory consumption was 95.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:44,298 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:15:44,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 873.91 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 49.9 MB in the beginning and 69.2 MB in the end (delta: -19.3 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:44,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.65 ms. Allocated memory is still 111.1 MB. Free memory was 68.7 MB in the beginning and 63.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:44,300 INFO L168 Benchmark]: Boogie Preprocessor took 109.42 ms. Allocated memory is still 111.1 MB. Free memory was 63.4 MB in the beginning and 59.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:44,300 INFO L168 Benchmark]: RCFGBuilder took 2275.14 ms. Allocated memory is still 111.1 MB. Free memory was 58.7 MB in the beginning and 39.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:44,301 INFO L168 Benchmark]: TraceAbstraction took 11552.32 ms. Allocated memory was 111.1 MB in the beginning and 172.0 MB in the end (delta: 60.8 MB). Free memory was 39.2 MB in the beginning and 46.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:44,301 INFO L168 Benchmark]: Witness Printer took 184.66 ms. Allocated memory was 172.0 MB in the beginning and 207.6 MB in the end (delta: 35.7 MB). Free memory was 46.3 MB in the beginning and 163.7 MB in the end (delta: -117.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:15:44,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 873.91 ms. Allocated memory was 88.1 MB in the beginning and 111.1 MB in the end (delta: 23.1 MB). Free memory was 49.9 MB in the beginning and 69.2 MB in the end (delta: -19.3 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.65 ms. Allocated memory is still 111.1 MB. Free memory was 68.7 MB in the beginning and 63.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 109.42 ms. Allocated memory is still 111.1 MB. Free memory was 63.4 MB in the beginning and 59.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2275.14 ms. Allocated memory is still 111.1 MB. Free memory was 58.7 MB in the beginning and 39.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11552.32 ms. Allocated memory was 111.1 MB in the beginning and 172.0 MB in the end (delta: 60.8 MB). Free memory was 39.2 MB in the beginning and 46.3 MB in the end (delta: -7.2 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. * Witness Printer took 184.66 ms. Allocated memory was 172.0 MB in the beginning and 207.6 MB in the end (delta: 35.7 MB). Free memory was 46.3 MB in the beginning and 163.7 MB in the end (delta: -117.4 MB). Peak memory consumption was 8.5 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: 453]: 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: 11421.5ms, OverallIterations: 11, TraceHistogramMax: 4, EmptinessCheckTime: 60.1ms, AutomataDifference: 4484.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 352.0ms, InitialAbstractionConstructionTime: 19.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 705 SDtfs, 581 SDslu, 43 SDs, 0 SdLazy, 2294 SolverSat, 502 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3075.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 810 GetRequests, 789 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=7, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 416.8ms AutomataMinimizationTime, 11 MinimizatonAttempts, 710 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 255 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1082 FormulaSimplificationTreeSizeReduction, 53.7ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 212 FormulaSimplificationTreeSizeReductionInter, 290.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 241.4ms SsaConstructionTime, 620.4ms SatisfiabilityAnalysisTime, 3811.2ms InterpolantComputationTime, 1526 NumberOfCodeBlocks, 1526 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1903 ConstructedInterpolants, 0 QuantifiedInterpolants, 4740 SizeOfPredicates, 0 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 804/883 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: (((((((((a8 <= 13 && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && 15 <= a8)) || ((((5 <= a16 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1)) || (a17 <= 0 && a20 == 1)) || ((a20 <= 0 && a17 <= 0) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || (a17 <= 0 && (((a8 <= 14 && a20 == 1) || a8 <= 13) || (a8 <= 14 && a16 <= 5)))) || ((((a8 <= 14 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1)) || (a20 <= 0 && (((a8 <= 14 && a20 == 1) || a8 <= 13) || (a8 <= 14 && a16 <= 5))) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((a8 <= 13 && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && 15 <= a8)) || ((((5 <= a16 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1)) || (a17 <= 0 && a20 == 1)) || ((a20 <= 0 && a17 <= 0) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || (a17 <= 0 && (((a8 <= 14 && a20 == 1) || a8 <= 13) || (a8 <= 14 && a16 <= 5)))) || ((((a8 <= 14 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1)) || (a20 <= 0 && (((a8 <= 14 && a20 == 1) || a8 <= 13) || (a8 <= 14 && a16 <= 5))) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:15:44,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c917e1-c277-470b-bd25-44c17d951490/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...