./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P --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 dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:58:10,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:58:10,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:58:10,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:58:10,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:58:10,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:58:10,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:58:10,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:58:10,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:58:10,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:58:10,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:58:10,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:58:10,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:58:10,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:58:10,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:58:10,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:58:10,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:58:10,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:58:10,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:58:10,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:58:10,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:58:10,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:58:10,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:58:10,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:58:10,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:58:10,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:58:10,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:58:10,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:58:10,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:58:10,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:58:10,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:58:10,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:58:10,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:58:10,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:58:10,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:58:10,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:58:10,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:58:10,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:58:10,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:58:10,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:58:10,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:58:10,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:58:10,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:58:10,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:58:10,695 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:58:10,695 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:58:10,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:58:10,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:58:10,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:58:10,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:58:10,703 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:58:10,703 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:58:10,704 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:58:10,705 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:58:10,705 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:58:10,705 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:58:10,705 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:58:10,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:58:10,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:58:10,706 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:58:10,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:58:10,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:58:10,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:58:10,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:58:10,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:58:10,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:58:10,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:58:10,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:58:10,710 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:58:10,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:58:10,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:58:10,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:58:10,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:58:10,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:58:10,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:58:10,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:58:10,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:58:10,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:58:10,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:58:10,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:58:10,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:58:10,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:58:10,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:58:10,714 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_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a [2021-11-21 00:58:11,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:58:11,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:58:11,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:58:11,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:58:11,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:58:11,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-crafted/bor1.i [2021-11-21 00:58:11,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/9d62a672b/ce694368e0e44465b78b8d31e14395a2/FLAGad6395bc3 [2021-11-21 00:58:11,608 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:58:11,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/sv-benchmarks/c/array-crafted/bor1.i [2021-11-21 00:58:11,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/9d62a672b/ce694368e0e44465b78b8d31e14395a2/FLAGad6395bc3 [2021-11-21 00:58:11,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/9d62a672b/ce694368e0e44465b78b8d31e14395a2 [2021-11-21 00:58:11,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:58:11,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:58:11,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:58:11,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:58:11,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:58:11,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:58:11" (1/1) ... [2021-11-21 00:58:11,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cefbecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:11, skipping insertion in model container [2021-11-21 00:58:11,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:58:11" (1/1) ... [2021-11-21 00:58:11,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:58:12,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:58:12,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-21 00:58:12,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:58:12,212 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:58:12,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-21 00:58:12,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:58:12,263 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:58:12,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12 WrapperNode [2021-11-21 00:58:12,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:58:12,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:58:12,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:58:12,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:58:12,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,299 INFO L137 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2021-11-21 00:58:12,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:58:12,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:58:12,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:58:12,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:58:12,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:58:12,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:58:12,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:58:12,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:58:12,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (1/1) ... [2021-11-21 00:58:12,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:58:12,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:12,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:58:12,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:58:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:58:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2021-11-21 00:58:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2021-11-21 00:58:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:58:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:58:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:58:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:58:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:58:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:58:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:58:12,476 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:58:12,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:58:12,622 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:58:12,651 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:58:12,651 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 00:58:12,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:58:12 BoogieIcfgContainer [2021-11-21 00:58:12,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:58:12,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:58:12,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:58:12,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:58:12,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:58:11" (1/3) ... [2021-11-21 00:58:12,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3772c963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:58:12, skipping insertion in model container [2021-11-21 00:58:12,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:12" (2/3) ... [2021-11-21 00:58:12,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3772c963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:58:12, skipping insertion in model container [2021-11-21 00:58:12,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:58:12" (3/3) ... [2021-11-21 00:58:12,661 INFO L111 eAbstractionObserver]: Analyzing ICFG bor1.i [2021-11-21 00:58:12,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:58:12,667 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:58:12,712 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:58:12,720 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:58:12,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:58:12,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:58:12,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:12,741 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:12,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1439153059, now seen corresponding path program 1 times [2021-11-21 00:58:12,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:12,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170229683] [2021-11-21 00:58:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:12,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:58:13,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:13,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170229683] [2021-11-21 00:58:13,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170229683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:13,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:58:13,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:58:13,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578276621] [2021-11-21 00:58:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:13,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:58:13,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:13,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:58:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:58:13,076 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:58:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:13,138 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-21 00:58:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:58:13,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-11-21 00:58:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:13,157 INFO L225 Difference]: With dead ends: 33 [2021-11-21 00:58:13,157 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 00:58:13,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:58:13,167 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:13,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:58:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 00:58:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-21 00:58:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-21 00:58:13,221 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-21 00:58:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-21 00:58:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:58:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-21 00:58:13,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 00:58:13,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:13,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:13,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:58:13,228 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:13,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash -538547963, now seen corresponding path program 1 times [2021-11-21 00:58:13,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:13,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004377093] [2021-11-21 00:58:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:13,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:58:13,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:13,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004377093] [2021-11-21 00:58:13,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004377093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290546258] [2021-11-21 00:58:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:13,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:13,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:13,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:13,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:58:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:13,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:58:13,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 00:58:13,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:58:13,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290546258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:13,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:58:13,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:58:13,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773936290] [2021-11-21 00:58:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:13,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:58:13,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:58:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:58:13,566 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 00:58:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:13,596 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-21 00:58:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:58:13,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-21 00:58:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:13,597 INFO L225 Difference]: With dead ends: 29 [2021-11-21 00:58:13,598 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 00:58:13,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:58:13,600 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:13,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:58:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 00:58:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-21 00:58:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-21 00:58:13,607 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-21 00:58:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:13,607 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-21 00:58:13,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 00:58:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-21 00:58:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 00:58:13,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:13,609 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:13,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:13,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 00:58:13,827 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash -807854650, now seen corresponding path program 1 times [2021-11-21 00:58:13,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540696180] [2021-11-21 00:58:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:13,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:58:13,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:13,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540696180] [2021-11-21 00:58:13,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540696180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:13,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435644142] [2021-11-21 00:58:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:13,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:13,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:13,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:13,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:58:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:13,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:58:13,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 00:58:14,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:58:14,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435644142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:58:14,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:58:14,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:58:14,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498754328] [2021-11-21 00:58:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:58:14,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:58:14,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:58:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:58:14,061 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 00:58:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:14,077 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-21 00:58:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:58:14,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-11-21 00:58:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:14,079 INFO L225 Difference]: With dead ends: 27 [2021-11-21 00:58:14,079 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 00:58:14,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:58:14,081 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:14,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:58:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 00:58:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-21 00:58:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-21 00:58:14,088 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-21 00:58:14,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:14,090 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-21 00:58:14,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 00:58:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-21 00:58:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 00:58:14,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:14,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:14,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:14,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-21 00:58:14,316 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash 34772627, now seen corresponding path program 1 times [2021-11-21 00:58:14,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:14,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133190241] [2021-11-21 00:58:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:14,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 00:58:14,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:14,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133190241] [2021-11-21 00:58:14,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133190241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:14,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978740458] [2021-11-21 00:58:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:14,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:14,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:14,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:14,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:58:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:14,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:58:14,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 00:58:14,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 00:58:14,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978740458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:14,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [785177182] [2021-11-21 00:58:14,729 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:14,729 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:14,734 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:14,739 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:14,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:14,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:14,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:14,916 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:14,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:14,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:14,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:58:15,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:15,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:15,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:58:15,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:15,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:15,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:15,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:15,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:15,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:15,401 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:58:15,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:58:15,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:16,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:16,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:16,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:16,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 00:58:16,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:16,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:16,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:16,703 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 00:58:16,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 00:58:16,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:16,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:16,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:17,376 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:17,575 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:18,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:18,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:18,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-21 00:58:18,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670749256] [2021-11-21 00:58:18,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:18,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:58:18,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:58:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:58:18,038 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:18,080 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-21 00:58:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:58:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2021-11-21 00:58:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:18,082 INFO L225 Difference]: With dead ends: 36 [2021-11-21 00:58:18,082 INFO L226 Difference]: Without dead ends: 21 [2021-11-21 00:58:18,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:58:18,090 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:18,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:58:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-21 00:58:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-21 00:58:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-21 00:58:18,098 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-21 00:58:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:18,098 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-21 00:58:18,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-21 00:58:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 00:58:18,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:18,100 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:18,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:18,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:18,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash 160034795, now seen corresponding path program 2 times [2021-11-21 00:58:18,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:18,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677407584] [2021-11-21 00:58:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:18,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:58:18,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:18,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677407584] [2021-11-21 00:58:18,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677407584] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:18,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292661097] [2021-11-21 00:58:18,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:58:18,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:18,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:18,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:18,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:58:18,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:58:18,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:58:18,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:58:18,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:58:18,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:58:18,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292661097] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:18,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1103343352] [2021-11-21 00:58:18,577 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:18,578 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:18,578 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:18,579 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:18,579 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:18,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,623 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:58:18,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:58:18,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,671 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:18,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:18,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 00:58:18,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:18,919 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 00:58:18,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 00:58:19,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:19,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:19,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:58:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,779 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:58:19,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:58:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:19,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:19,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:20,382 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:20,555 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:21,342 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:21,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:21,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-21 00:58:21,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178896255] [2021-11-21 00:58:21,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:21,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:58:21,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:58:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:58:21,344 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:58:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:21,370 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-21 00:58:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:58:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2021-11-21 00:58:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:21,371 INFO L225 Difference]: With dead ends: 38 [2021-11-21 00:58:21,371 INFO L226 Difference]: Without dead ends: 24 [2021-11-21 00:58:21,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:58:21,373 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:21,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:58:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-21 00:58:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-21 00:58:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-21 00:58:21,379 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-21 00:58:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:21,379 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-21 00:58:21,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:58:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-21 00:58:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-21 00:58:21,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:21,381 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:21,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:21,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:21,607 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1885684020, now seen corresponding path program 3 times [2021-11-21 00:58:21,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:21,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294026810] [2021-11-21 00:58:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:21,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-21 00:58:21,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:21,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294026810] [2021-11-21 00:58:21,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294026810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:21,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789317855] [2021-11-21 00:58:21,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:58:21,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:21,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:21,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:21,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:58:21,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:58:21,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:58:21,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:58:21,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-21 00:58:21,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-21 00:58:21,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789317855] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:21,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1298287874] [2021-11-21 00:58:21,954 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:21,955 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:21,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:21,955 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:21,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:21,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,006 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:58:22,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:58:22,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,050 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:22,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:22,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:58:22,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:22,264 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:58:22,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:58:22,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:22,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:23,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:23,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:23,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:23,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:58:23,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:23,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:23,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:23,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:23,340 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:58:23,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:58:23,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:23,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:23,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:23,948 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:24,130 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:24,723 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:24,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:24,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-21 00:58:24,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994377363] [2021-11-21 00:58:24,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:24,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:58:24,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:58:24,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:58:24,725 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:58:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:24,771 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-21 00:58:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:58:24,772 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2021-11-21 00:58:24,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:24,773 INFO L225 Difference]: With dead ends: 49 [2021-11-21 00:58:24,773 INFO L226 Difference]: Without dead ends: 31 [2021-11-21 00:58:24,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:58:24,775 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:24,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:58:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-21 00:58:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-21 00:58:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-21 00:58:24,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-21 00:58:24,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:24,782 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-21 00:58:24,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:58:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-21 00:58:24,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-21 00:58:24,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:24,784 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:24,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:24,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:24,992 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash 210425085, now seen corresponding path program 4 times [2021-11-21 00:58:24,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:24,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637713527] [2021-11-21 00:58:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:24,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 00:58:25,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:25,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637713527] [2021-11-21 00:58:25,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637713527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:25,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696083935] [2021-11-21 00:58:25,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:58:25,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:25,145 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:25,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:58:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:25,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 00:58:25,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 00:58:25,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 00:58:25,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696083935] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:25,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1020702397] [2021-11-21 00:58:25,567 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:25,567 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:25,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:25,568 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:25,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:25,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,612 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:25,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:25,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:58:25,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 00:58:25,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:25,861 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 00:58:25,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 00:58:26,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:26,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:26,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:26,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:58:26,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,783 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:58:26,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:58:26,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:26,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:26,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:27,304 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:27,481 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:27,979 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:27,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:27,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2021-11-21 00:58:27,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423741788] [2021-11-21 00:58:27,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:27,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 00:58:27,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 00:58:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:58:27,981 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:28,057 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-11-21 00:58:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:58:28,058 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-11-21 00:58:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:28,059 INFO L225 Difference]: With dead ends: 62 [2021-11-21 00:58:28,059 INFO L226 Difference]: Without dead ends: 43 [2021-11-21 00:58:28,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:58:28,062 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:28,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:58:28,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-21 00:58:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-21 00:58:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:28,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-21 00:58:28,071 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2021-11-21 00:58:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:28,072 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-21 00:58:28,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-21 00:58:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 00:58:28,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:28,075 INFO L514 BasicCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:28,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:28,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 00:58:28,288 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1481216765, now seen corresponding path program 5 times [2021-11-21 00:58:28,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:28,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979969955] [2021-11-21 00:58:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:28,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-21 00:58:28,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:28,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979969955] [2021-11-21 00:58:28,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979969955] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:28,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477109614] [2021-11-21 00:58:28,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:58:28,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:28,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:28,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:28,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:58:28,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:58:28,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:58:28,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:58:28,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-21 00:58:28,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-21 00:58:29,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477109614] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:29,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963597830] [2021-11-21 00:58:29,064 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:29,064 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:29,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:29,065 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:29,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:29,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,103 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:58:29,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:58:29,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,143 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:29,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:29,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 00:58:29,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,410 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 00:58:29,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 00:58:29,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:29,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:30,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:30,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 00:58:30,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:30,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:30,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:30,245 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 00:58:30,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 00:58:30,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:30,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:30,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:30,973 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:31,201 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:31,811 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:31,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:31,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2021-11-21 00:58:31,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495819603] [2021-11-21 00:58:31,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:31,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-21 00:58:31,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:31,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-21 00:58:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 00:58:31,815 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:58:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:31,918 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2021-11-21 00:58:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-21 00:58:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-21 00:58:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:31,924 INFO L225 Difference]: With dead ends: 69 [2021-11-21 00:58:31,925 INFO L226 Difference]: Without dead ends: 50 [2021-11-21 00:58:31,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 00:58:31,927 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:31,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:58:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-21 00:58:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-21 00:58:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-21 00:58:31,937 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2021-11-21 00:58:31,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:31,938 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-21 00:58:31,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:58:31,938 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-21 00:58:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 00:58:31,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:31,942 INFO L514 BasicCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:31,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:32,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 00:58:32,155 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash -10477499, now seen corresponding path program 6 times [2021-11-21 00:58:32,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:32,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291236209] [2021-11-21 00:58:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:32,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 00:58:32,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:32,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291236209] [2021-11-21 00:58:32,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291236209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:32,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277423375] [2021-11-21 00:58:32,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:58:32,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:32,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:32,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:32,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:58:32,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:58:32,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:58:32,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 00:58:32,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 00:58:32,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 00:58:33,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277423375] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:33,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2130766592] [2021-11-21 00:58:33,780 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:33,780 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:33,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:33,781 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:33,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:33,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:33,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:33,833 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:33,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:33,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:33,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:58:33,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:33,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:33,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 00:58:34,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,120 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 00:58:34,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 00:58:34,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:34,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:34,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 00:58:34,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:34,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:35,024 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 00:58:35,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 00:58:35,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:35,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:35,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:35,669 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:35,877 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:36,665 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:36,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:36,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2021-11-21 00:58:36,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024771796] [2021-11-21 00:58:36,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:36,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-21 00:58:36,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-21 00:58:36,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=2703, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 00:58:36,670 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:36,812 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2021-11-21 00:58:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-21 00:58:36,812 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2021-11-21 00:58:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:36,817 INFO L225 Difference]: With dead ends: 100 [2021-11-21 00:58:36,817 INFO L226 Difference]: Without dead ends: 75 [2021-11-21 00:58:36,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1329, Invalid=2703, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 00:58:36,822 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:36,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:58:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-21 00:58:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-21 00:58:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-11-21 00:58:36,846 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2021-11-21 00:58:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:36,848 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-11-21 00:58:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-11-21 00:58:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-21 00:58:36,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:36,862 INFO L514 BasicCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:36,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:37,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:37,075 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:37,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:37,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1436572317, now seen corresponding path program 7 times [2021-11-21 00:58:37,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:37,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507537238] [2021-11-21 00:58:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:37,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 00:58:38,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507537238] [2021-11-21 00:58:38,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507537238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133302681] [2021-11-21 00:58:38,274 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:58:38,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:38,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:38,275 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:38,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:58:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:38,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-21 00:58:38,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 00:58:38,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 00:58:41,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133302681] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:41,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [131928416] [2021-11-21 00:58:41,359 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:41,359 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:41,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:41,360 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:41,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:41,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,420 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:41,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:41,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:58:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:58:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:41,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:41,714 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:58:41,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:58:42,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:42,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:42,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:42,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:58:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,797 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:58:42,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:58:42,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:42,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:42,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:43,391 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:43,601 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:44,512 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:44,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:44,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2021-11-21 00:58:44,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454717883] [2021-11-21 00:58:44,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:44,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-21 00:58:44,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-21 00:58:44,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5101, Invalid=7781, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 00:58:44,522 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:44,750 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2021-11-21 00:58:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-21 00:58:44,751 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2021-11-21 00:58:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:44,753 INFO L225 Difference]: With dead ends: 150 [2021-11-21 00:58:44,753 INFO L226 Difference]: Without dead ends: 125 [2021-11-21 00:58:44,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5101, Invalid=7781, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 00:58:44,764 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:44,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:58:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-21 00:58:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-21 00:58:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2021-11-21 00:58:44,796 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2021-11-21 00:58:44,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:44,797 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2021-11-21 00:58:44,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:58:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2021-11-21 00:58:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-21 00:58:44,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:44,803 INFO L514 BasicCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:44,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:45,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:58:45,031 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1773791133, now seen corresponding path program 8 times [2021-11-21 00:58:45,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787830987] [2021-11-21 00:58:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:45,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2021-11-21 00:58:49,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:49,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787830987] [2021-11-21 00:58:49,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787830987] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:49,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258820481] [2021-11-21 00:58:49,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:58:49,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:49,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:49,272 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:49,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:58:49,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:58:49,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:58:49,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:58:49,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2021-11-21 00:58:49,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2021-11-21 00:58:50,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258820481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:50,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1138516503] [2021-11-21 00:58:50,116 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:50,117 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:50,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:50,117 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:50,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:50,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,170 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:58:50,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:58:50,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,219 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:50,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:50,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 00:58:50,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:50,485 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 00:58:50,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 00:58:50,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:58:51,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:58:51,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:58:51,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:58:51,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,429 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:58:51,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:58:51,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:51,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:58:51,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:58:52,079 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:58:52,264 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:58:53,486 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:58:53,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:58:53,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2021-11-21 00:58:53,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338905071] [2021-11-21 00:58:53,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:58:53,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-21 00:58:53,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:58:53,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-21 00:58:53,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5128, Invalid=9152, Unknown=0, NotChecked=0, Total=14280 [2021-11-21 00:58:53,495 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:58:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:58:53,684 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-11-21 00:58:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-21 00:58:53,685 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2021-11-21 00:58:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:58:53,691 INFO L225 Difference]: With dead ends: 155 [2021-11-21 00:58:53,691 INFO L226 Difference]: Without dead ends: 130 [2021-11-21 00:58:53,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=5128, Invalid=9152, Unknown=0, NotChecked=0, Total=14280 [2021-11-21 00:58:53,698 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:58:53,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:58:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-21 00:58:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-21 00:58:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:58:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2021-11-21 00:58:53,726 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2021-11-21 00:58:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:58:53,727 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2021-11-21 00:58:53,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:58:53,727 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2021-11-21 00:58:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-21 00:58:53,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:58:53,729 INFO L514 BasicCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:58:53,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:58:53,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 00:58:53,930 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:58:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:58:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1239752187, now seen corresponding path program 9 times [2021-11-21 00:58:53,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:58:53,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559977473] [2021-11-21 00:58:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:58:53,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:58:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:58:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-21 00:58:58,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:58:58,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559977473] [2021-11-21 00:58:58,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559977473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:58:58,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465459944] [2021-11-21 00:58:58,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:58:58,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:58:58,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:58,306 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:58:58,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:58:58,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:58:58,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:58:58,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-21 00:58:58,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:58:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-21 00:58:58,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:58:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-11-21 00:58:59,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465459944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:58:59,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1042520764] [2021-11-21 00:58:59,436 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:58:59,437 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:58:59,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:58:59,437 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:58:59,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:58:59,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,482 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:58:59,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:58:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:58:59,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 00:58:59,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:58:59,765 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 00:58:59,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 00:59:00,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:00,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:00,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:00,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:59:00,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,685 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:59:00,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:59:00,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:00,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:00,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:01,305 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:01,527 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:02,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:02,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:02,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2021-11-21 00:59:02,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951003235] [2021-11-21 00:59:02,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:02,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-21 00:59:02,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-21 00:59:02,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5304, Invalid=8036, Unknown=0, NotChecked=0, Total=13340 [2021-11-21 00:59:02,673 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:59:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:02,820 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2021-11-21 00:59:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-21 00:59:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2021-11-21 00:59:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:02,822 INFO L225 Difference]: With dead ends: 160 [2021-11-21 00:59:02,823 INFO L226 Difference]: Without dead ends: 131 [2021-11-21 00:59:02,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5304, Invalid=8036, Unknown=0, NotChecked=0, Total=13340 [2021-11-21 00:59:02,828 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:02,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:59:02,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-21 00:59:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-21 00:59:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2021-11-21 00:59:02,840 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2021-11-21 00:59:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:02,841 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2021-11-21 00:59:02,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 00:59:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2021-11-21 00:59:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-21 00:59:02,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:02,844 INFO L514 BasicCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:02,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:59:03,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 00:59:03,071 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash -981192611, now seen corresponding path program 10 times [2021-11-21 00:59:03,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:03,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224149595] [2021-11-21 00:59:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:03,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:59:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-21 00:59:03,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:03,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224149595] [2021-11-21 00:59:03,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224149595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:03,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253057495] [2021-11-21 00:59:03,334 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:59:03,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:03,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:59:03,335 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:59:03,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 00:59:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:03,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 00:59:03,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:59:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-21 00:59:03,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:59:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2021-11-21 00:59:04,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253057495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:59:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [315588569] [2021-11-21 00:59:04,080 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:59:04,080 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:04,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:04,080 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:04,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:04,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,105 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:59:04,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:59:04,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,154 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:59:04,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:59:04,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:59:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:04,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:04,363 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:59:04,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:59:04,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:05,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:05,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:05,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:59:05,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,410 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:59:05,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:59:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:05,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:05,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:05,928 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:06,098 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:06,627 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:06,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:06,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-21 00:59:06,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924560977] [2021-11-21 00:59:06,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:06,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 00:59:06,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 00:59:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:59:06,629 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:59:06,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:06,677 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-11-21 00:59:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 00:59:06,678 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2021-11-21 00:59:06,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:06,679 INFO L225 Difference]: With dead ends: 171 [2021-11-21 00:59:06,680 INFO L226 Difference]: Without dead ends: 143 [2021-11-21 00:59:06,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=351, Invalid=1055, Unknown=0, NotChecked=0, Total=1406 [2021-11-21 00:59:06,681 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:06,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:59:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-21 00:59:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-21 00:59:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0217391304347827) internal successors, (141), 138 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2021-11-21 00:59:06,691 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 156 [2021-11-21 00:59:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:06,692 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2021-11-21 00:59:06,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:59:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2021-11-21 00:59:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-21 00:59:06,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:06,695 INFO L514 BasicCegarLoop]: trace histogram [100, 66, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:06,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-21 00:59:06,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:06,911 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash 786965917, now seen corresponding path program 11 times [2021-11-21 00:59:06,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:06,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591427176] [2021-11-21 00:59:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:06,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:59:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6110 trivial. 0 not checked. [2021-11-21 00:59:07,455 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:07,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591427176] [2021-11-21 00:59:07,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591427176] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:07,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747747672] [2021-11-21 00:59:07,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:59:07,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:07,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:59:07,460 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:59:07,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 00:59:07,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 00:59:07,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:59:07,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:59:07,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:59:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 1062 proven. 21 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2021-11-21 00:59:08,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:59:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7423 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2021-11-21 00:59:08,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747747672] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:59:08,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1888721903] [2021-11-21 00:59:08,607 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:59:08,607 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:08,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:08,608 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:08,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:08,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,647 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:59:08,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:59:08,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:59:08,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:59:08,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:08,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:08,924 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:59:08,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:59:09,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:09,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:09,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:09,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:09,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:09,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:09,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:59:09,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:09,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:09,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:09,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:09,902 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:59:09,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:59:10,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:10,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:10,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:10,498 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:10,729 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:11,459 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:11,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:11,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2021-11-21 00:59:11,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336174317] [2021-11-21 00:59:11,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:11,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-21 00:59:11,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-21 00:59:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=2182, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 00:59:11,462 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:59:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:11,548 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2021-11-21 00:59:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-21 00:59:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 192 [2021-11-21 00:59:11,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:11,550 INFO L225 Difference]: With dead ends: 192 [2021-11-21 00:59:11,550 INFO L226 Difference]: Without dead ends: 152 [2021-11-21 00:59:11,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=470, Invalid=2182, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 00:59:11,552 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:11,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:59:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-21 00:59:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-21 00:59:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2021-11-21 00:59:11,564 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 192 [2021-11-21 00:59:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:11,565 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 156 transitions. [2021-11-21 00:59:11,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 39 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:59:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 156 transitions. [2021-11-21 00:59:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-21 00:59:11,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:11,569 INFO L514 BasicCegarLoop]: trace histogram [100, 69, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:11,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 00:59:11,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 00:59:11,795 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1469567442, now seen corresponding path program 12 times [2021-11-21 00:59:11,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:11,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961532520] [2021-11-21 00:59:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:11,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:59:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-21 00:59:12,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961532520] [2021-11-21 00:59:12,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961532520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253736144] [2021-11-21 00:59:12,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:59:12,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:12,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:59:12,340 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:59:12,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-21 00:59:12,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:59:12,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:59:12,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 00:59:12,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:59:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 1154 proven. 276 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-21 00:59:13,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:59:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7717 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2021-11-21 00:59:14,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253736144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:59:14,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927951865] [2021-11-21 00:59:14,239 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:59:14,240 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:14,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:14,240 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:14,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:14,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,299 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:59:14,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:59:14,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:59:14,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:59:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:14,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:14,586 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:59:14,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:59:15,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:15,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:15,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:15,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:15,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 00:59:15,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:15,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:15,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:15,616 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-21 00:59:15,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 67 [2021-11-21 00:59:15,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:15,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:15,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:16,210 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:16,387 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:17,304 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:17,304 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:17,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-11-21 00:59:17,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388068309] [2021-11-21 00:59:17,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:17,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-21 00:59:17,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-21 00:59:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=2702, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 00:59:17,308 INFO L87 Difference]: Start difference. First operand 152 states and 156 transitions. Second operand has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:59:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:17,423 INFO L93 Difference]: Finished difference Result 226 states and 260 transitions. [2021-11-21 00:59:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-21 00:59:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 203 [2021-11-21 00:59:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:17,426 INFO L225 Difference]: With dead ends: 226 [2021-11-21 00:59:17,426 INFO L226 Difference]: Without dead ends: 177 [2021-11-21 00:59:17,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1330, Invalid=2702, Unknown=0, NotChecked=0, Total=4032 [2021-11-21 00:59:17,428 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:17,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:59:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-21 00:59:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-21 00:59:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.0174418604651163) internal successors, (175), 172 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2021-11-21 00:59:17,439 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 203 [2021-11-21 00:59:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:17,439 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2021-11-21 00:59:17,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:59:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2021-11-21 00:59:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-21 00:59:17,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:17,446 INFO L514 BasicCegarLoop]: trace histogram [144, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:17,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-21 00:59:17,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 00:59:17,667 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1704592509, now seen corresponding path program 13 times [2021-11-21 00:59:17,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:17,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003952171] [2021-11-21 00:59:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:17,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:59:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-21 00:59:19,241 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:19,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003952171] [2021-11-21 00:59:19,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003952171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:19,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519857441] [2021-11-21 00:59:19,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:59:19,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:19,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:59:19,243 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:59:19,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-21 00:59:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:19,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-21 00:59:19,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:59:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 4804 proven. 1176 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-21 00:59:20,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:59:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15892 backedges. 0 proven. 5980 refuted. 0 times theorem prover too weak. 9912 trivial. 0 not checked. [2021-11-21 00:59:23,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519857441] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:59:23,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1600748812] [2021-11-21 00:59:23,413 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:59:23,414 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:23,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:23,414 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:23,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:23,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,459 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:59:23,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:59:23,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:59:23,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:59:23,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:23,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:23,705 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:59:23,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:59:24,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:24,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:24,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:24,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:59:24,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,766 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:59:24,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:59:24,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:24,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:25,210 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:25,411 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:26,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:26,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:26,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2021-11-21 00:59:26,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265072844] [2021-11-21 00:59:26,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:26,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-21 00:59:26,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-21 00:59:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5104, Invalid=7778, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 00:59:26,328 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:59:26,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:26,500 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2021-11-21 00:59:26,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-21 00:59:26,501 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 278 [2021-11-21 00:59:26,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:26,508 INFO L225 Difference]: With dead ends: 301 [2021-11-21 00:59:26,508 INFO L226 Difference]: Without dead ends: 227 [2021-11-21 00:59:26,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=5104, Invalid=7778, Unknown=0, NotChecked=0, Total=12882 [2021-11-21 00:59:26,511 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:26,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:59:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-21 00:59:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-21 00:59:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2021-11-21 00:59:26,524 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 278 [2021-11-21 00:59:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:26,525 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2021-11-21 00:59:26,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 101 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-21 00:59:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2021-11-21 00:59:26,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-21 00:59:26,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:26,529 INFO L514 BasicCegarLoop]: trace histogram [294, 100, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:26,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-21 00:59:26,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 00:59:26,731 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1810292317, now seen corresponding path program 14 times [2021-11-21 00:59:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:26,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969177935] [2021-11-21 00:59:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:26,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:59:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 24455 refuted. 0 times theorem prover too weak. 24662 trivial. 0 not checked. [2021-11-21 00:59:30,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:30,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969177935] [2021-11-21 00:59:30,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969177935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:30,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213262928] [2021-11-21 00:59:30,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:59:30,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:30,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:59:30,500 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:59:30,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 00:59:33,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-21 00:59:33,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:59:33,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 00:59:33,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:59:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 19606 proven. 105 refuted. 0 times theorem prover too weak. 29406 trivial. 0 not checked. [2021-11-21 00:59:34,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:59:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 49117 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 49012 trivial. 0 not checked. [2021-11-21 00:59:36,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213262928] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:59:36,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [81833290] [2021-11-21 00:59:36,014 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:59:36,015 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:36,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:36,015 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:36,015 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:36,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,046 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:59:36,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:59:36,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,090 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:59:36,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:59:36,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:59:36,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:36,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:36,306 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:59:36,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:59:36,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:37,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:37,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:59:37,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,397 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:59:37,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:59:37,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:37,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:37,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:37,938 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:38,138 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:39,471 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:39,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:39,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 17, 17] total 131 [2021-11-21 00:59:39,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285310275] [2021-11-21 00:59:39,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:39,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-21 00:59:39,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-21 00:59:39,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5596, Invalid=14996, Unknown=0, NotChecked=0, Total=20592 [2021-11-21 00:59:39,478 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:59:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:39,719 INFO L93 Difference]: Finished difference Result 368 states and 394 transitions. [2021-11-21 00:59:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-21 00:59:39,719 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 428 [2021-11-21 00:59:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:39,722 INFO L225 Difference]: With dead ends: 368 [2021-11-21 00:59:39,722 INFO L226 Difference]: Without dead ends: 244 [2021-11-21 00:59:39,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1241 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5596, Invalid=14996, Unknown=0, NotChecked=0, Total=20592 [2021-11-21 00:59:39,725 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:39,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:59:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-21 00:59:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-21 00:59:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.0125523012552302) internal successors, (242), 239 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2021-11-21 00:59:39,742 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 428 [2021-11-21 00:59:39,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:39,743 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2021-11-21 00:59:39,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.1374045801526718) internal successors, (149), 131 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 00:59:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2021-11-21 00:59:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-21 00:59:39,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:39,749 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 30, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:39,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-21 00:59:39,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 00:59:39,975 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:39,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:39,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2018114578, now seen corresponding path program 15 times [2021-11-21 00:59:39,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:39,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64309912] [2021-11-21 00:59:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:39,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:59:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 00:59:40,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:40,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64309912] [2021-11-21 00:59:40,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64309912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:40,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428373212] [2021-11-21 00:59:40,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:59:40,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:59:40,973 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:59:40,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-21 00:59:41,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:59:41,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:59:41,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 00:59:41,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:59:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 20004 proven. 465 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-21 00:59:42,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:59:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 50371 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 00:59:43,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428373212] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:59:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121542031] [2021-11-21 00:59:43,934 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:59:43,934 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:43,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:43,935 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:43,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:43,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:43,979 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:59:43,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:59:43,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:43,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,010 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:59:44,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:59:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 106 [2021-11-21 00:59:44,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:44,250 INFO L354 Elim1Store]: treesize reduction 138, result has 20.2 percent of original size [2021-11-21 00:59:44,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2021-11-21 00:59:44,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:44,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:44,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:45,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:45,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-21 00:59:45,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:45,380 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-21 00:59:45,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2021-11-21 00:59:45,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:45,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:45,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:46,028 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:46,224 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:47,087 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:47,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:47,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2021-11-21 00:59:47,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355050989] [2021-11-21 00:59:47,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:47,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-21 00:59:47,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:47,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-21 00:59:47,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2134, Invalid=3872, Unknown=0, NotChecked=0, Total=6006 [2021-11-21 00:59:47,118 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:59:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:47,206 INFO L93 Difference]: Finished difference Result 383 states and 419 transitions. [2021-11-21 00:59:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-21 00:59:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 447 [2021-11-21 00:59:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:47,214 INFO L225 Difference]: With dead ends: 383 [2021-11-21 00:59:47,215 INFO L226 Difference]: Without dead ends: 276 [2021-11-21 00:59:47,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1372 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2134, Invalid=3872, Unknown=0, NotChecked=0, Total=6006 [2021-11-21 00:59:47,217 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:47,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:59:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-21 00:59:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-21 00:59:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.011070110701107) internal successors, (274), 271 states have internal predecessors, (274), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2021-11-21 00:59:47,235 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 447 [2021-11-21 00:59:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:47,236 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2021-11-21 00:59:47,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:59:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2021-11-21 00:59:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-21 00:59:47,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:47,242 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 62, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:47,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-21 00:59:47,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-21 00:59:47,455 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 542916078, now seen corresponding path program 16 times [2021-11-21 00:59:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:47,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611253841] [2021-11-21 00:59:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:47,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:59:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 00:59:49,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:49,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611253841] [2021-11-21 00:59:49,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611253841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:49,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170963034] [2021-11-21 00:59:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:59:49,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:49,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:59:49,375 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:59:49,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-21 00:59:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:59:49,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-21 00:59:49,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:59:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 20004 proven. 1953 refuted. 0 times theorem prover too weak. 29902 trivial. 0 not checked. [2021-11-21 00:59:50,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:59:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 51859 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 49906 trivial. 0 not checked. [2021-11-21 00:59:53,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170963034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:59:53,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [290539272] [2021-11-21 00:59:53,043 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 00:59:53,044 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:53,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:53,044 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:53,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:53,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,083 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-21 00:59:53,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-21 00:59:53,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,121 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:59:53,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:59:53,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 111 [2021-11-21 00:59:53,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,312 INFO L354 Elim1Store]: treesize reduction 153, result has 12.6 percent of original size [2021-11-21 00:59:53,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2021-11-21 00:59:53,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-21 00:59:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:53,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-21 00:59:54,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:54,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:54,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:59:54,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-21 00:59:54,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:54,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:54,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:54,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:54,080 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:59:54,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2021-11-21 00:59:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:54,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-21 00:59:54,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:59:54,620 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 15 for LOIs [2021-11-21 00:59:54,785 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:59:55,671 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:59:55,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:59:55,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 102 [2021-11-21 00:59:55,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316384474] [2021-11-21 00:59:55,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:59:55,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-21 00:59:55,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:59:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-21 00:59:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5202, Invalid=7908, Unknown=0, NotChecked=0, Total=13110 [2021-11-21 00:59:55,677 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:59:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:59:55,881 INFO L93 Difference]: Finished difference Result 420 states and 461 transitions. [2021-11-21 00:59:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-21 00:59:55,882 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 479 [2021-11-21 00:59:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:59:55,886 INFO L225 Difference]: With dead ends: 420 [2021-11-21 00:59:55,886 INFO L226 Difference]: Without dead ends: 313 [2021-11-21 00:59:55,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1386 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2022 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5202, Invalid=7908, Unknown=0, NotChecked=0, Total=13110 [2021-11-21 00:59:55,889 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:59:55,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:59:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-21 00:59:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-21 00:59:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 308 states have (on average 1.0097402597402598) internal successors, (311), 308 states have internal predecessors, (311), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:59:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 317 transitions. [2021-11-21 00:59:55,929 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 317 transitions. Word has length 479 [2021-11-21 00:59:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:59:55,930 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 317 transitions. [2021-11-21 00:59:55,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:59:55,931 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 317 transitions. [2021-11-21 00:59:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-11-21 00:59:55,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:59:55,936 INFO L514 BasicCegarLoop]: trace histogram [297, 100, 99, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:59:55,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-21 00:59:56,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:59:56,137 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:59:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:59:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1090664405, now seen corresponding path program 17 times [2021-11-21 00:59:56,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:59:56,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719980538] [2021-11-21 00:59:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:59:56,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:00:11,936 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:00:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:00:17,573 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:00:17,574 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:00:17,575 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:00:17,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 01:00:17,581 INFO L732 BasicCegarLoop]: Path program histogram: [17, 1, 1, 1] [2021-11-21 01:00:17,587 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:00:17,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:00:17 BoogieIcfgContainer [2021-11-21 01:00:17,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:00:17,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:00:17,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:00:17,990 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:00:17,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:58:12" (3/4) ... [2021-11-21 01:00:17,995 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:00:17,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:00:17,996 INFO L158 Benchmark]: Toolchain (without parser) took 126025.79ms. Allocated memory was 111.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 71.6MB in the beginning and 351.0MB in the end (delta: -279.5MB). Peak memory consumption was 777.8MB. Max. memory is 16.1GB. [2021-11-21 01:00:17,996 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:00:17,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.09ms. Allocated memory is still 111.1MB. Free memory was 71.3MB in the beginning and 84.6MB in the end (delta: -13.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:00:17,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.65ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 83.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:00:17,999 INFO L158 Benchmark]: Boogie Preprocessor took 26.61ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 81.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:00:17,999 INFO L158 Benchmark]: RCFGBuilder took 326.15ms. Allocated memory is still 111.1MB. Free memory was 81.8MB in the beginning and 70.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:00:18,000 INFO L158 Benchmark]: TraceAbstraction took 125333.83ms. Allocated memory was 111.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 69.6MB in the beginning and 351.0MB in the end (delta: -281.5MB). Peak memory consumption was 837.1MB. Max. memory is 16.1GB. [2021-11-21 01:00:18,000 INFO L158 Benchmark]: Witness Printer took 5.20ms. Allocated memory is still 1.2GB. Free memory is still 351.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:00:18,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.09ms. Allocated memory is still 111.1MB. Free memory was 71.3MB in the beginning and 84.6MB in the end (delta: -13.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.65ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 83.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.61ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 81.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.15ms. Allocated memory is still 111.1MB. Free memory was 81.8MB in the beginning and 70.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 125333.83ms. Allocated memory was 111.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 69.6MB in the beginning and 351.0MB in the end (delta: -281.5MB). Peak memory consumption was 837.1MB. Max. memory is 16.1GB. * Witness Printer took 5.20ms. Allocated memory is still 1.2GB. Free memory is still 351.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 24. Possible FailurePath: [L31] int x[100]; [L32] int temp; [L33] int ret; [L34] int ret2; [L35] int ret5; [L37] int i = 0; VAL [i=0, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=1, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=2, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=3, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=4, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=5, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=6, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=7, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=8, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=9, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=10, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=11, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=12, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=13, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=14, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=15, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=16, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=17, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=18, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=19, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=20, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=21, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=22, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=23, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=24, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=25, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=26, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=27, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=28, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=29, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=30, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=31, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=32, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=33, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=34, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=35, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=36, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=37, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=38, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=39, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=40, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=41, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=42, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=43, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=44, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=45, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=46, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=47, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=48, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=49, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=50, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=51, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=52, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=53, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=54, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=55, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=56, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=57, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=58, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=59, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=60, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=61, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=62, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=63, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=64, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=65, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=66, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=67, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=68, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=69, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=70, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=71, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=72, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=73, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=74, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=75, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=76, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=77, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=78, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=79, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=80, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=81, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=82, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=83, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=84, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=85, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=86, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=87, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=88, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=89, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=90, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=91, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=92, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=93, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=94, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=95, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=96, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=97, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=98, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=99, x={9:0}] [L37] COND TRUE i < 100 [L38] x[i] = __VERIFIER_nondet_int() [L37] i++ VAL [i=100, x={9:0}] [L37] COND FALSE !(i < 100) VAL [i=100, x={9:0}] [L41] CALL, EXPR bor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L41] RET, EXPR bor(x) VAL [bor(x)=-63, i=100, x={9:0}] [L41] ret = bor(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp VAL [i=100, ret=-63, temp=-3, x={9:0}] [L44] CALL, EXPR bor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L44] RET, EXPR bor(x) VAL [bor(x)=-1, i=100, ret=-63, temp=-3, x={9:0}] [L44] ret2 = bor(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; VAL [i=0, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=1, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=2, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=3, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=4, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=5, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=6, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=7, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=8, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=9, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=10, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=11, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=12, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=13, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=14, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=15, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=16, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=17, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=18, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=19, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=20, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=21, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=22, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=23, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=24, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=25, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=26, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=27, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=28, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=29, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=30, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=31, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=32, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=33, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=34, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=35, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=36, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=37, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=38, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=39, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=40, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=41, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=42, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=43, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=44, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=45, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=46, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=47, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=48, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=49, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=50, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=51, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=52, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=53, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=54, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=55, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=56, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=57, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=58, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=59, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=60, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=61, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=62, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=63, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=64, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=65, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=66, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=67, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=68, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=69, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=70, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=71, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=72, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=73, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=74, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=75, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=76, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=77, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=78, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=79, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=80, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=81, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=82, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=83, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=84, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=85, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=86, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=87, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=88, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=89, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=90, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=91, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=92, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=93, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=94, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=95, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=96, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=97, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=98, i=100, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND TRUE i<100 -1 [L47] EXPR x[i+1] [L47] x[i] = x[i+1] [L46] i++ VAL [i=100, i=99, ret=-63, ret2=-1, temp=-3, x={9:0}] [L46] COND FALSE !(i<100 -1) [L49] x[100 -1] = temp VAL [i=100, i=99, ret=-63, ret2=-1, temp=-3, x={9:0}] [L50] CALL, EXPR bor(x) VAL [x={9:0}] [L20] int i; [L21] long long res; [L22] EXPR x[0] [L22] res = x[0] [L23] i = 1 VAL [i=1, res=-3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=2, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=3, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=4, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=5, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=6, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=7, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=8, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=9, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=10, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=11, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=12, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=13, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=14, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=15, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=16, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=17, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=18, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=19, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=20, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=21, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=22, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=23, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=24, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=25, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=26, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=27, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=28, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=29, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=30, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=31, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=32, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=33, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=34, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=35, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=36, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=37, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=38, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=39, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=40, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=41, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=42, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=43, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=44, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=45, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=46, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=47, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=48, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=49, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=50, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=51, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=52, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=53, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=54, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=55, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=56, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=57, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=58, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=59, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=60, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=61, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=62, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=63, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=64, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=65, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=66, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=67, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=68, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=69, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=70, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=71, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=72, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=73, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=74, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=75, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=76, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=77, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=78, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=79, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=80, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=81, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=82, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=83, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=84, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=85, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=86, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=87, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=88, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=89, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=90, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=91, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=92, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=93, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=94, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=95, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=96, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=97, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=98, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=99, x={9:0}, x={9:0}] [L23] COND TRUE i < 100 [L24] EXPR x[i] [L24] res = res | x[i] [L23] i++ VAL [i=100, x={9:0}, x={9:0}] [L23] COND FALSE !(i < 100) [L26] return res; [L50] RET, EXPR bor(x) VAL [bor(x)=65, i=100, i=99, ret=-63, ret2=-1, temp=-3, x={9:0}] [L50] ret5 = bor(x) [L52] COND TRUE ret != ret2 || ret !=ret5 VAL [i=100, i=99, ret=-63, ret2=-1, ret5=65, temp=-3, x={9:0}] [L53] reach_error() VAL [i=99, i=100, ret=-63, ret2=-1, ret5=65, temp=-3, x={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 124.9s, OverallIterations: 20, TraceHistogramMax: 297, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.1s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1257 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1525 IncrementalHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 229 mSDtfsCounter, 1525 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9225 GetRequests, 8076 SyntacticMatches, 2 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21179 ImplicationChecksByTransitivity, 41.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=19, InterpolantAutomatonStates: 962, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 21.9s SatisfiabilityAnalysisTime, 41.5s InterpolantComputationTime, 6332 NumberOfCodeBlocks, 5668 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 8616 ConstructedInterpolants, 0 QuantifiedInterpolants, 11458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 10162 ConjunctsInSsa, 421 ConjunctsInUnsatCore, 53 InterpolantComputations, 3 PerfectInterpolantSequences, 531682/606421 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:00:18,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P --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 dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:00:20,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:00:20,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:00:20,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:00:20,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:00:20,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:00:20,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:00:20,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:00:20,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:00:20,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:00:20,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:00:20,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:00:20,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:00:20,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:00:20,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:00:20,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:00:21,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:00:21,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:00:21,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:00:21,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:00:21,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:00:21,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:00:21,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:00:21,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:00:21,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:00:21,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:00:21,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:00:21,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:00:21,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:00:21,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:00:21,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:00:21,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:00:21,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:00:21,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:00:21,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:00:21,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:00:21,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:00:21,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:00:21,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:00:21,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:00:21,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:00:21,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:00:21,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:00:21,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:00:21,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:00:21,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:00:21,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:00:21,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:00:21,107 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:00:21,107 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:00:21,108 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:00:21,108 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:00:21,108 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:00:21,108 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:00:21,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:00:21,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:00:21,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:00:21,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:00:21,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:00:21,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:00:21,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:00:21,111 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:00:21,112 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:00:21,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:00:21,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:00:21,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:00:21,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:00:21,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:00:21,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:00:21,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:00:21,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:00:21,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:00:21,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:00:21,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:00:21,115 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:00:21,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:21,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:00:21,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:00:21,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:00:21,117 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc029b09d1398b404e1aee83359480f2bc7a4040f694547fb82d365d81b9786a [2021-11-21 01:00:21,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:00:21,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:00:21,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:00:21,632 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:00:21,635 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:00:21,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-crafted/bor1.i [2021-11-21 01:00:21,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/bbd0ee432/70d88ac4ad14483c80059daaeef817a9/FLAGa7b34efa6 [2021-11-21 01:00:22,447 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:00:22,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/sv-benchmarks/c/array-crafted/bor1.i [2021-11-21 01:00:22,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/bbd0ee432/70d88ac4ad14483c80059daaeef817a9/FLAGa7b34efa6 [2021-11-21 01:00:22,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/data/bbd0ee432/70d88ac4ad14483c80059daaeef817a9 [2021-11-21 01:00:22,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:00:22,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:00:22,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:00:22,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:00:22,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:00:22,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:00:22" (1/1) ... [2021-11-21 01:00:22,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d5bb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:22, skipping insertion in model container [2021-11-21 01:00:22,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:00:22" (1/1) ... [2021-11-21 01:00:22,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:00:22,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:00:22,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-21 01:00:23,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:00:23,020 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:00:23,107 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2021-11-21 01:00:23,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:00:23,136 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:00:23,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23 WrapperNode [2021-11-21 01:00:23,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:00:23,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:00:23,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:00:23,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:00:23,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,220 INFO L137 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2021-11-21 01:00:23,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:00:23,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:00:23,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:00:23,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:00:23,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:00:23,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:00:23,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:00:23,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:00:23,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (1/1) ... [2021-11-21 01:00:23,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:00:23,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:23,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:00:23,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:00:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:00:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2021-11-21 01:00:23,410 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2021-11-21 01:00:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:00:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:00:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:00:23,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:00:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:00:23,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:00:23,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:00:23,548 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:00:23,551 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:00:23,805 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:00:23,812 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:00:23,812 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:00:23,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:00:23 BoogieIcfgContainer [2021-11-21 01:00:23,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:00:23,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:00:23,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:00:23,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:00:23,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:00:22" (1/3) ... [2021-11-21 01:00:23,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19851a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:00:23, skipping insertion in model container [2021-11-21 01:00:23,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:23" (2/3) ... [2021-11-21 01:00:23,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19851a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:00:23, skipping insertion in model container [2021-11-21 01:00:23,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:00:23" (3/3) ... [2021-11-21 01:00:23,826 INFO L111 eAbstractionObserver]: Analyzing ICFG bor1.i [2021-11-21 01:00:23,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:00:23,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:00:23,932 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:00:23,941 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:00:23,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:00:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-21 01:00:23,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:23,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:24,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2021-11-21 01:00:24,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:24,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432541719] [2021-11-21 01:00:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:24,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:24,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:24,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:24,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:00:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:24,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:00:24,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:00:24,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:00:24,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:24,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432541719] [2021-11-21 01:00:24,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432541719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:24,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:24,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 01:00:24,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961364138] [2021-11-21 01:00:24,583 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:24,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:00:24,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:00:24,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:00:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:00:24,627 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:00:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:24,701 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2021-11-21 01:00:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:00:24,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2021-11-21 01:00:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:24,713 INFO L225 Difference]: With dead ends: 51 [2021-11-21 01:00:24,714 INFO L226 Difference]: Without dead ends: 25 [2021-11-21 01:00:24,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:00:24,722 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:24,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:00:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-21 01:00:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-21 01:00:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:24,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-21 01:00:24,778 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 28 [2021-11-21 01:00:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:24,779 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-21 01:00:24,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-21 01:00:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-21 01:00:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-21 01:00:24,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:24,782 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:24,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:24,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:00:24,987 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 339608831, now seen corresponding path program 1 times [2021-11-21 01:00:24,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:24,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310816807] [2021-11-21 01:00:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:24,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:24,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:25,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:00:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:25,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:00:25,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:00:25,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:00:25,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:25,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310816807] [2021-11-21 01:00:25,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310816807] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:25,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [470439833] [2021-11-21 01:00:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:25,502 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:25,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:00:25,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:00:25,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-21 01:00:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:25,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:00:25,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:00:25,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:00:25,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [470439833] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:25,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59497077] [2021-11-21 01:00:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:25,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:25,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:25,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:25,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:00:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:25,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:00:25,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-21 01:00:26,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:00:26,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59497077] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:00:26,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-21 01:00:26,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5, 5, 5, 3] total 10 [2021-11-21 01:00:26,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764706018] [2021-11-21 01:00:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:26,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:00:26,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:00:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:00:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:26,198 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:00:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:26,227 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-11-21 01:00:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:00:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-21 01:00:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:26,231 INFO L225 Difference]: With dead ends: 44 [2021-11-21 01:00:26,231 INFO L226 Difference]: Without dead ends: 27 [2021-11-21 01:00:26,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:26,238 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:26,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:00:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-21 01:00:26,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-21 01:00:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-21 01:00:26,259 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2021-11-21 01:00:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:26,260 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-21 01:00:26,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:00:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-21 01:00:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-21 01:00:26,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:26,262 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:26,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:26,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:26,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:26,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:26,877 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1949475587, now seen corresponding path program 1 times [2021-11-21 01:00:26,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:26,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175717557] [2021-11-21 01:00:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:26,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:26,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:26,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:00:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:26,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:00:26,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:00:27,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:00:27,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:27,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175717557] [2021-11-21 01:00:27,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175717557] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:27,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [469542573] [2021-11-21 01:00:27,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:27,260 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:27,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:00:27,261 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:00:27,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-21 01:00:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:00:27,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:00:27,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-21 01:00:27,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [469542573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:27,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349306250] [2021-11-21 01:00:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:27,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:27,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:27,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:27,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:00:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:27,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:00:27,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-21 01:00:27,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:00:27,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349306250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:27,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-21 01:00:27,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-21 01:00:27,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354480496] [2021-11-21 01:00:27,932 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:27,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:00:27,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:00:27,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:00:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:27,936 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:00:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:27,979 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-11-21 01:00:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:00:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-11-21 01:00:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:27,983 INFO L225 Difference]: With dead ends: 42 [2021-11-21 01:00:27,983 INFO L226 Difference]: Without dead ends: 29 [2021-11-21 01:00:27,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:00:27,995 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:27,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:00:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-21 01:00:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-21 01:00:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-21 01:00:28,012 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2021-11-21 01:00:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:28,015 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-21 01:00:28,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:00:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-21 01:00:28,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-21 01:00:28,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:28,026 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 01:00:28,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:28,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:28,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:28,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:00:28,640 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash 285795001, now seen corresponding path program 1 times [2021-11-21 01:00:28,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:28,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345073786] [2021-11-21 01:00:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:28,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:28,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:28,671 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:28,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:00:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:28,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:00:28,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:00:28,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:00:29,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:29,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345073786] [2021-11-21 01:00:29,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345073786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:29,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1677291054] [2021-11-21 01:00:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:29,037 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:00:29,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:00:29,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-21 01:00:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:00:29,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:29,315 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:00:29,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:00:29,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1677291054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433006045] [2021-11-21 01:00:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:29,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:29,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:29,427 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:29,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:00:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:29,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:00:29,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-21 01:00:29,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 01:00:29,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433006045] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:29,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:00:29,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2021-11-21 01:00:29,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160735612] [2021-11-21 01:00:29,790 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:00:29,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:00:29,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:00:29,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:00:29,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:00:29,792 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:00:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:30,052 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2021-11-21 01:00:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:00:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2021-11-21 01:00:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:30,054 INFO L225 Difference]: With dead ends: 65 [2021-11-21 01:00:30,054 INFO L226 Difference]: Without dead ends: 43 [2021-11-21 01:00:30,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:00:30,057 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:30,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 222 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:00:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-21 01:00:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-21 01:00:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-11-21 01:00:30,066 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 42 [2021-11-21 01:00:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:30,067 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-11-21 01:00:30,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:00:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-11-21 01:00:30,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 01:00:30,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:30,070 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:30,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:30,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:30,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:30,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:30,685 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1724337221, now seen corresponding path program 2 times [2021-11-21 01:00:30,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:30,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413643566] [2021-11-21 01:00:30,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:00:30,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:30,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:30,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:00:30,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:00:30,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:30,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:00:30,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:00:31,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:00:31,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413643566] [2021-11-21 01:00:31,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413643566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [332359466] [2021-11-21 01:00:31,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:00:31,412 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:00:31,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:00:31,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-21 01:00:31,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:00:31,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:31,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:00:31,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:00:31,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-21 01:00:31,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [332359466] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:31,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574156803] [2021-11-21 01:00:31,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:00:31,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:31,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:31,940 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:31,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 01:00:32,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:00:32,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:32,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:00:32,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-21 01:00:32,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-21 01:00:32,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574156803] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:32,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:00:32,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-21 01:00:32,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722501057] [2021-11-21 01:00:32,519 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:00:32,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-21 01:00:32,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:00:32,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-21 01:00:32,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:00:32,522 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:00:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:33,460 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2021-11-21 01:00:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 01:00:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2021-11-21 01:00:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:33,463 INFO L225 Difference]: With dead ends: 95 [2021-11-21 01:00:33,463 INFO L226 Difference]: Without dead ends: 67 [2021-11-21 01:00:33,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:00:33,466 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:33,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 319 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:00:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-21 01:00:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-21 01:00:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-11-21 01:00:33,479 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 68 [2021-11-21 01:00:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:33,479 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-11-21 01:00:33,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 01:00:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-11-21 01:00:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-21 01:00:33,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:33,482 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:33,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:33,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-21 01:00:33,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-21 01:00:34,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:00:34,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash 275281219, now seen corresponding path program 3 times [2021-11-21 01:00:34,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:34,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202322654] [2021-11-21 01:00:34,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:00:34,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:34,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:34,103 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:34,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:00:34,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:00:34,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:34,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:00:34,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:00:34,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:00:34,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:34,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202322654] [2021-11-21 01:00:34,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202322654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:34,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [634823559] [2021-11-21 01:00:34,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:00:34,793 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:34,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:00:34,794 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:00:34,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-21 01:00:35,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:00:35,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:35,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:00:35,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:00:35,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:00:35,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [634823559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:35,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287185404] [2021-11-21 01:00:35,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:00:35,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:35,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:35,717 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:35,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 01:00:35,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-21 01:00:35,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:35,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:00:35,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:00:36,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-11-21 01:00:36,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287185404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:36,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:00:36,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 8, 7, 8] total 16 [2021-11-21 01:00:36,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389917102] [2021-11-21 01:00:36,366 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:00:36,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:00:36,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:00:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:00:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:00:36,367 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:00:36,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:36,705 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-11-21 01:00:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:00:36,710 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 92 [2021-11-21 01:00:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:36,712 INFO L225 Difference]: With dead ends: 114 [2021-11-21 01:00:36,712 INFO L226 Difference]: Without dead ends: 79 [2021-11-21 01:00:36,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:00:36,714 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:36,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 196 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:00:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-21 01:00:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-21 01:00:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-11-21 01:00:36,735 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 92 [2021-11-21 01:00:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:36,735 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-11-21 01:00:36,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:00:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-11-21 01:00:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-21 01:00:36,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:36,738 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 14, 14, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:36,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:36,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-21 01:00:37,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-21 01:00:37,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:37,360 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2141889097, now seen corresponding path program 4 times [2021-11-21 01:00:37,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:37,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924418654] [2021-11-21 01:00:37,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:00:37,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:37,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:37,363 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:37,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:00:37,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:00:37,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:37,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:00:37,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:00:37,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:00:38,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:38,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924418654] [2021-11-21 01:00:38,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924418654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:38,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1560216124] [2021-11-21 01:00:38,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:00:38,898 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:38,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:00:38,910 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:00:38,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-21 01:00:39,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:00:39,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:39,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:00:39,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:00:39,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2021-11-21 01:00:39,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1560216124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:39,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961163668] [2021-11-21 01:00:39,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:00:39,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:39,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:39,736 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:39,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-21 01:00:39,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:00:39,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:39,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-21 01:00:39,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 444 proven. 100 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-11-21 01:00:40,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-21 01:00:42,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961163668] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:42,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:00:42,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 13, 14] total 55 [2021-11-21 01:00:42,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714822281] [2021-11-21 01:00:42,434 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:00:42,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-21 01:00:42,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:00:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-21 01:00:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2505, Unknown=0, NotChecked=0, Total=2970 [2021-11-21 01:00:42,439 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:00:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:49,522 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2021-11-21 01:00:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-21 01:00:49,525 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2021-11-21 01:00:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:49,527 INFO L225 Difference]: With dead ends: 183 [2021-11-21 01:00:49,527 INFO L226 Difference]: Without dead ends: 135 [2021-11-21 01:00:49,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1187, Invalid=5133, Unknown=0, NotChecked=0, Total=6320 [2021-11-21 01:00:49,534 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:49,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 562 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 01:00:49,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-21 01:00:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-21 01:00:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:00:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2021-11-21 01:00:49,552 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 128 [2021-11-21 01:00:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:49,553 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 139 transitions. [2021-11-21 01:00:49,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:00:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 139 transitions. [2021-11-21 01:00:49,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-21 01:00:49,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:49,560 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 30, 30, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:49,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:49,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:49,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:50,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:50,164 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash 906527935, now seen corresponding path program 5 times [2021-11-21 01:00:50,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:00:50,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417957389] [2021-11-21 01:00:50,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-21 01:00:50,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:00:50,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:00:50,187 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:00:50,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 01:00:52,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-11-21 01:00:52,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:52,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:00:52,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 2028 proven. 484 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2021-11-21 01:00:53,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:00:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5439 backedges. 0 proven. 2516 refuted. 0 times theorem prover too weak. 2923 trivial. 0 not checked. [2021-11-21 01:00:56,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:00:56,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417957389] [2021-11-21 01:00:56,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417957389] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:00:56,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [476299634] [2021-11-21 01:00:56,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-21 01:00:56,748 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:00:56,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:00:56,749 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:00:56,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a699228-06e5-4978-b954-2f9ed0a79c14/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process