./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_two_index_02.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_two_index_02.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH --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 85e78694133d7e011f7a790be665c543ea082543f17d80457e8ec7e008ca566c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:19:51,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:19:51,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:19:51,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:19:51,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:19:51,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:19:51,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:19:51,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:19:51,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:19:51,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:19:51,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:19:51,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:19:51,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:19:51,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:19:51,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:19:51,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:19:51,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:19:51,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:19:51,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:19:51,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:19:51,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:19:51,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:19:51,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:19:51,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:19:51,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:19:51,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:19:51,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:19:51,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:19:51,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:19:51,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:19:51,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:19:51,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:19:51,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:19:51,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:19:51,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:19:51,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:19:51,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:19:51,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:19:51,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:19:51,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:19:51,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:19:51,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:19:51,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:19:51,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:19:51,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:19:51,971 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:19:51,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:19:51,972 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:19:51,972 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:19:51,972 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:19:51,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:19:51,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:19:51,979 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:19:51,979 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:19:51,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:19:51,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:19:51,980 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:19:51,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:19:51,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:19:51,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:19:51,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:19:51,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:19:51,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:19:51,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:19:51,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:19:51,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:19:51,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:19:51,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:19:51,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:19:51,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:19:51,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:19:51,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:19:51,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:19:51,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:19:51,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:19:51,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:19:51,985 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:19:51,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:19:51,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:19:51,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:19:51,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:19:51,986 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_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e78694133d7e011f7a790be665c543ea082543f17d80457e8ec7e008ca566c [2021-11-03 05:19:52,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:19:52,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:19:52,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:19:52,258 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:19:52,259 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:19:52,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/array-examples/standard_two_index_02.i [2021-11-03 05:19:52,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/data/c4df08aaa/b3a52f7afe404c5dae2a3be57dd7708a/FLAGccbd52cc0 [2021-11-03 05:19:52,797 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:19:52,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/sv-benchmarks/c/array-examples/standard_two_index_02.i [2021-11-03 05:19:52,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/data/c4df08aaa/b3a52f7afe404c5dae2a3be57dd7708a/FLAGccbd52cc0 [2021-11-03 05:19:53,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/data/c4df08aaa/b3a52f7afe404c5dae2a3be57dd7708a [2021-11-03 05:19:53,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:19:53,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:19:53,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:19:53,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:19:53,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:19:53,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413bdd6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53, skipping insertion in model container [2021-11-03 05:19:53,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:19:53,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:19:53,420 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/sv-benchmarks/c/array-examples/standard_two_index_02.i[814,827] [2021-11-03 05:19:53,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:19:53,436 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:19:53,447 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/sv-benchmarks/c/array-examples/standard_two_index_02.i[814,827] [2021-11-03 05:19:53,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:19:53,464 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:19:53,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53 WrapperNode [2021-11-03 05:19:53,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:19:53,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:19:53,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:19:53,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:19:53,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:19:53,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:19:53,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:19:53,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:19:53,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:19:53,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:19:53,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:19:53,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:19:53,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (1/1) ... [2021-11-03 05:19:53,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:19:53,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:53,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:19:53,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:19:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:19:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:19:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 05:19:53,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:19:53,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:19:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 05:19:53,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:19:53,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:19:53,834 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-03 05:19:53,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:19:53 BoogieIcfgContainer [2021-11-03 05:19:53,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:19:53,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:19:53,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:19:53,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:19:53,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:19:53" (1/3) ... [2021-11-03 05:19:53,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db2cfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:19:53, skipping insertion in model container [2021-11-03 05:19:53,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:19:53" (2/3) ... [2021-11-03 05:19:53,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db2cfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:19:53, skipping insertion in model container [2021-11-03 05:19:53,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:19:53" (3/3) ... [2021-11-03 05:19:53,848 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_two_index_02.i [2021-11-03 05:19:53,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:19:53,855 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:19:53,912 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:19:53,919 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 [2021-11-03 05:19:53,925 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:19:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:19:53,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:53,958 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:19:53,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:19:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1745982706, now seen corresponding path program 1 times [2021-11-03 05:19:53,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:54,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614847463] [2021-11-03 05:19:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:54,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:54,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:54,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614847463] [2021-11-03 05:19:54,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614847463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:54,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:54,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:19:54,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095985040] [2021-11-03 05:19:54,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:19:54,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:54,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:19:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:19:54,209 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:54,262 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-11-03 05:19:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:19:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 05:19:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:54,272 INFO L225 Difference]: With dead ends: 17 [2021-11-03 05:19:54,273 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 05:19:54,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:19:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 05:19:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 05:19:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-03 05:19:54,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2021-11-03 05:19:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:54,310 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-03 05:19:54,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-03 05:19:54,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 05:19:54,312 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:54,312 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:54,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:19:54,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:19:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash 276578033, now seen corresponding path program 1 times [2021-11-03 05:19:54,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:54,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704804831] [2021-11-03 05:19:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:54,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:54,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:54,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704804831] [2021-11-03 05:19:54,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704804831] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:19:54,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611886533] [2021-11-03 05:19:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:54,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:54,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:54,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:54,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:19:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:54,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:19:54,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:19:54,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:19:54,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611886533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:54,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 05:19:54,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-11-03 05:19:54,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458855206] [2021-11-03 05:19:54,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:19:54,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:19:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:19:54,590 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:54,628 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-11-03 05:19:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:19:54,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 05:19:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:54,629 INFO L225 Difference]: With dead ends: 24 [2021-11-03 05:19:54,629 INFO L226 Difference]: Without dead ends: 18 [2021-11-03 05:19:54,630 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:19:54,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-03 05:19:54,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-11-03 05:19:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-11-03 05:19:54,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2021-11-03 05:19:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:54,636 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-11-03 05:19:54,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-03 05:19:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 05:19:54,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:54,641 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:54,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:54,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:54,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:19:54,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1613563666, now seen corresponding path program 1 times [2021-11-03 05:19:54,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:54,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80758680] [2021-11-03 05:19:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:54,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:19:54,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:54,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80758680] [2021-11-03 05:19:54,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80758680] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:19:54,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961924446] [2021-11-03 05:19:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:54,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:54,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:54,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:54,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 05:19:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:55,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:19:55,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:19:55,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:19:55,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961924446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:19:55,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1526215844] [2021-11-03 05:19:55,236 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 05:19:55,237 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:19:55,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:19:55,246 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:19:55,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:19:55,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,280 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 05:19:55,285 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:55,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-03 05:19:55,313 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_29|]} [2021-11-03 05:19:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-03 05:19:55,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:55,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:55,346 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:55,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:55,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,417 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-03 05:19:55,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-11-03 05:19:55,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:19:55,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:19:55,424 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:55,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:55,454 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 05:19:55,466 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:55,467 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:121 [2021-11-03 05:19:55,489 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-03 05:19:55,508 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,512 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 05:19:55,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:55,516 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,519 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 05:19:55,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:55,523 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 05:19:55,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-03 05:19:55,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-03 05:19:55,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 05:19:55,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 05:19:55,572 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:55,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:55,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-11-03 05:19:55,605 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:55,606 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:140, output treesize:137 [2021-11-03 05:19:55,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:55,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:55,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:55,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,798 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,800 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:55,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:55,803 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,842 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:19:55,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:55,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 299 [2021-11-03 05:19:55,855 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-11-03 05:19:55,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-03 05:19:55,884 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,897 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,901 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:55,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:55,904 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,907 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-03 05:19:55,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-11-03 05:19:55,911 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-03 05:19:55,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:55,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:55,927 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,928 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:55,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 05:19:55,932 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 05:19:55,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 315 [2021-11-03 05:19:55,942 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:55,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:55,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-11-03 05:19:55,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 353 [2021-11-03 05:19:55,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:55,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-03 05:19:56,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:56,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:56,008 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 50 [2021-11-03 05:19:56,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:19:56,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-03 05:19:56,036 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,081 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,099 INFO L180 QuantifierPusher]: treesize reduction 106, result has 75.3 percent of original size [2021-11-03 05:19:56,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 335 [2021-11-03 05:19:56,108 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:19:56,108 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:437, output treesize:335 [2021-11-03 05:19:56,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,194 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-03 05:19:56,198 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,199 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:56,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 05:19:56,201 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:56,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:56,211 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 16 treesize of output 12 [2021-11-03 05:19:56,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:56,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:56,212 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:56,219 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,220 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:67, output treesize:69 [2021-11-03 05:19:56,225 INFO L180 QuantifierPusher]: treesize reduction 46, result has 48.9 percent of original size [2021-11-03 05:19:56,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:19:56,230 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-11-03 05:19:56,232 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-03 05:19:56,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 05:19:56,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,241 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 22 treesize of output 22 [2021-11-03 05:19:56,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 05:19:56,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-03 05:19:56,244 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,246 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 05:19:56,249 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,249 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:60 [2021-11-03 05:19:56,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,281 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,284 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:56,285 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:19:56,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-11-03 05:19:56,288 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-03 05:19:56,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-03 05:19:56,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:19:56,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,324 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:19:56,324 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 44 treesize of output 53 [2021-11-03 05:19:56,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:19:56,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 05:19:56,328 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:56,338 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 25 treesize of output 25 [2021-11-03 05:19:56,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:56,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:56,340 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,356 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,363 INFO L180 QuantifierPusher]: treesize reduction 98, result has 59.7 percent of original size [2021-11-03 05:19:56,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 05:19:56,365 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:19:56,366 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:247, output treesize:145 [2021-11-03 05:19:56,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,400 INFO L180 QuantifierPusher]: treesize reduction 36, result has 68.1 percent of original size [2021-11-03 05:19:56,403 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:56,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:56,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:56,424 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 05:19:56,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-03 05:19:56,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:56,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:56,427 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:56,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:56,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-03 05:19:56,432 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:56,432 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2021-11-03 05:19:56,437 INFO L180 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-11-03 05:19:56,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:19:56,444 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:19:56,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:56,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 05:19:56,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2021-11-03 05:19:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688747277] [2021-11-03 05:19:56,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:19:56,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:19:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:19:56,810 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:56,870 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2021-11-03 05:19:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:19:56,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 05:19:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:56,871 INFO L225 Difference]: With dead ends: 50 [2021-11-03 05:19:56,871 INFO L226 Difference]: Without dead ends: 42 [2021-11-03 05:19:56,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:19:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-03 05:19:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 21. [2021-11-03 05:19:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-03 05:19:56,877 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2021-11-03 05:19:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:56,877 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-03 05:19:56,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-03 05:19:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 05:19:56,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:56,879 INFO L513 BasicCegarLoop]: trace histogram [8, 5, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:56,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:57,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:57,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:19:57,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash 63513562, now seen corresponding path program 2 times [2021-11-03 05:19:57,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:57,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466966431] [2021-11-03 05:19:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:57,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 05:19:57,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:57,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466966431] [2021-11-03 05:19:57,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466966431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:19:57,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790576964] [2021-11-03 05:19:57,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:19:57,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:57,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:57,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 05:19:57,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-03 05:19:57,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:19:57,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:19:57,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 05:19:57,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-03 05:19:57,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790576964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:19:57,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [12218673] [2021-11-03 05:19:57,501 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 05:19:57,501 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:19:57,502 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:19:57,502 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:19:57,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:19:57,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,511 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:57,514 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 05:19:57,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-03 05:19:57,522 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 36=[|v_#valid_30|]} [2021-11-03 05:19:57,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-03 05:19:57,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:57,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:57,540 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:57,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:57,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,580 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-03 05:19:57,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-11-03 05:19:57,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:19:57,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:19:57,588 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:57,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:57,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 05:19:57,600 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:57,600 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:121 [2021-11-03 05:19:57,604 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-03 05:19:57,614 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,615 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:57,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 05:19:57,617 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,619 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:57,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:57,623 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 05:19:57,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-03 05:19:57,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-03 05:19:57,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:57,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:57,644 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:57,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:57,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-03 05:19:57,656 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:57,656 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:147, output treesize:149 [2021-11-03 05:19:57,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:57,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:57,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:57,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,748 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,760 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,766 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:19:57,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:57,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 309 [2021-11-03 05:19:57,775 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-03 05:19:57,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-03 05:19:57,803 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,803 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,805 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:57,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:57,811 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,816 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,817 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:57,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 05:19:57,819 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:57,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:57,826 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 05:19:57,836 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,838 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:57,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:57,840 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,841 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:19:57,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 05:19:57,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 05:19:57,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-03 05:19:57,849 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:57,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-03 05:19:57,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-11-03 05:19:57,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-03 05:19:57,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:57,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:57,886 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:57,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:57,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-03 05:19:57,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 05:19:57,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 05:19:57,909 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:57,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:57,953 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:57,969 INFO L180 QuantifierPusher]: treesize reduction 106, result has 75.9 percent of original size [2021-11-03 05:19:57,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 05:19:57,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:19:57,976 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:447, output treesize:345 [2021-11-03 05:19:57,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,047 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-03 05:19:58,051 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,052 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:19:58,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 05:19:58,057 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:58,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:58,068 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 16 treesize of output 12 [2021-11-03 05:19:58,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:58,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:19:58,070 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,073 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:58,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,080 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:67, output treesize:69 [2021-11-03 05:19:58,085 INFO L180 QuantifierPusher]: treesize reduction 46, result has 48.9 percent of original size [2021-11-03 05:19:58,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:19:58,088 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-11-03 05:19:58,090 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:58,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-11-03 05:19:58,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:58,098 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 25 treesize of output 25 [2021-11-03 05:19:58,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:58,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:58,100 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 05:19:58,105 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,106 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:65 [2021-11-03 05:19:58,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,134 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,137 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 05:19:58,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:58,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 05:19:58,141 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-03 05:19:58,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 05:19:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:58,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:58,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:19:58,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:58,174 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-03 05:19:58,174 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 47 treesize of output 56 [2021-11-03 05:19:58,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 05:19:58,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-03 05:19:58,178 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:58,187 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 25 treesize of output 25 [2021-11-03 05:19:58,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:58,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:58,190 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,228 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,234 INFO L180 QuantifierPusher]: treesize reduction 98, result has 60.2 percent of original size [2021-11-03 05:19:58,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-03 05:19:58,236 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:19:58,237 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:250, output treesize:148 [2021-11-03 05:19:58,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,268 INFO L180 QuantifierPusher]: treesize reduction 36, result has 68.1 percent of original size [2021-11-03 05:19:58,270 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:58,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:58,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:58,290 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 05:19:58,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-03 05:19:58,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:58,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:58,293 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:58,296 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:58,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-03 05:19:58,298 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:58,298 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2021-11-03 05:19:58,303 INFO L180 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-11-03 05:19:58,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:19:58,310 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:19:58,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:19:58,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 05:19:58,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-03 05:19:58,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210821784] [2021-11-03 05:19:58,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 05:19:58,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:58,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 05:19:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=217, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:19:58,642 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:58,759 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2021-11-03 05:19:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 05:19:58,759 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-03 05:19:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:58,762 INFO L225 Difference]: With dead ends: 99 [2021-11-03 05:19:58,763 INFO L226 Difference]: Without dead ends: 88 [2021-11-03 05:19:58,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=217, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:19:58,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-03 05:19:58,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 32. [2021-11-03 05:19:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-11-03 05:19:58,769 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 19 [2021-11-03 05:19:58,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:58,770 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-11-03 05:19:58,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-11-03 05:19:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 05:19:58,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:58,771 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:58,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:19:58,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-03 05:19:58,986 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:19:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash -766220722, now seen corresponding path program 3 times [2021-11-03 05:19:58,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:58,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914379252] [2021-11-03 05:19:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:58,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-03 05:19:59,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:59,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914379252] [2021-11-03 05:19:59,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914379252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:19:59,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919830069] [2021-11-03 05:19:59,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 05:19:59,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:19:59,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:19:59,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:19:59,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 05:19:59,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 05:19:59,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:19:59,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:19:59,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:19:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-03 05:19:59,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:19:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-03 05:19:59,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919830069] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:19:59,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1806684501] [2021-11-03 05:19:59,708 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 05:19:59,708 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:19:59,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:19:59,708 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:19:59,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:19:59,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,720 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:19:59,742 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 05:19:59,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-03 05:19:59,747 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 36=[|v_#valid_31|]} [2021-11-03 05:19:59,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-03 05:19:59,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:59,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,763 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:19:59,763 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:59,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:59,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,800 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-03 05:19:59,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-11-03 05:19:59,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:19:59,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:19:59,805 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:59,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:59,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 05:19:59,813 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:59,814 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:121 [2021-11-03 05:19:59,818 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-03 05:19:59,821 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,822 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:59,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 05:19:59,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,825 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,825 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:59,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:59,826 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 05:19:59,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-03 05:19:59,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:19:59,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-03 05:19:59,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:59,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:19:59,842 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:19:59,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:59,847 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-03 05:19:59,852 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:19:59,852 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:147, output treesize:149 [2021-11-03 05:19:59,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:59,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:59,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:19:59,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,910 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,917 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,921 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:19:59,923 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:59,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 309 [2021-11-03 05:19:59,928 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-03 05:19:59,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-03 05:19:59,937 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,939 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:59,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:59,947 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,953 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,954 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:19:59,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 05:19:59,956 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,957 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:59,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:59,959 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 05:19:59,962 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,963 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:19:59,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:19:59,965 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,966 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:19:59,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 05:19:59,969 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 05:19:59,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-03 05:19:59,974 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:19:59,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:19:59,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-03 05:19:59,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-11-03 05:20:00,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-03 05:20:00,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:20:00,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:20:00,010 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-03 05:20:00,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 05:20:00,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 05:20:00,029 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,074 INFO L180 QuantifierPusher]: treesize reduction 106, result has 75.9 percent of original size [2021-11-03 05:20:00,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 05:20:00,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:20:00,081 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:447, output treesize:345 [2021-11-03 05:20:00,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,147 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-03 05:20:00,149 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,150 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:20:00,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 05:20:00,152 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:00,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:20:00,159 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 16 treesize of output 12 [2021-11-03 05:20:00,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:20:00,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:20:00,161 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:20:00,165 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,166 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:67, output treesize:69 [2021-11-03 05:20:00,170 INFO L180 QuantifierPusher]: treesize reduction 46, result has 48.9 percent of original size [2021-11-03 05:20:00,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:20:00,173 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-11-03 05:20:00,174 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 05:20:00,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 05:20:00,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,181 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 17 treesize of output 17 [2021-11-03 05:20:00,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 05:20:00,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-03 05:20:00,183 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 05:20:00,187 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,187 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:53 [2021-11-03 05:20:00,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,210 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,211 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:20:00,214 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:00,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-03 05:20:00,217 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-03 05:20:00,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 05:20:00,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:20:00,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,245 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 05:20:00,246 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 39 treesize of output 48 [2021-11-03 05:20:00,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:20:00,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-03 05:20:00,251 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:00,259 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 25 treesize of output 25 [2021-11-03 05:20:00,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:00,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:00,262 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,279 INFO L180 QuantifierPusher]: treesize reduction 98, result has 58.8 percent of original size [2021-11-03 05:20:00,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-11-03 05:20:00,282 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:20:00,282 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:242, output treesize:140 [2021-11-03 05:20:00,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,312 INFO L180 QuantifierPusher]: treesize reduction 36, result has 68.1 percent of original size [2021-11-03 05:20:00,313 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:00,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:00,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:20:00,331 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 05:20:00,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-03 05:20:00,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:00,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:00,336 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:00,339 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:00,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-03 05:20:00,340 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:00,341 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2021-11-03 05:20:00,344 INFO L180 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-11-03 05:20:00,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:20:00,350 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:20:00,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:20:00,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 05:20:00,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 36 [2021-11-03 05:20:00,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622910980] [2021-11-03 05:20:00,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-03 05:20:00,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:00,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-03 05:20:00,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=747, Invalid=893, Unknown=0, NotChecked=0, Total=1640 [2021-11-03 05:20:00,693 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 36 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:00,980 INFO L93 Difference]: Finished difference Result 175 states and 207 transitions. [2021-11-03 05:20:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 05:20:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-03 05:20:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:00,985 INFO L225 Difference]: With dead ends: 175 [2021-11-03 05:20:00,985 INFO L226 Difference]: Without dead ends: 157 [2021-11-03 05:20:00,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=747, Invalid=893, Unknown=0, NotChecked=0, Total=1640 [2021-11-03 05:20:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-03 05:20:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 61. [2021-11-03 05:20:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-11-03 05:20:01,009 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 30 [2021-11-03 05:20:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:01,010 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-11-03 05:20:01,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-11-03 05:20:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:20:01,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:01,015 INFO L513 BasicCegarLoop]: trace histogram [33, 20, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:01,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:01,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-11-03 05:20:01,230 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:01,232 INFO L85 PathProgramCache]: Analyzing trace with hash -236623759, now seen corresponding path program 4 times [2021-11-03 05:20:01,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:01,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057893007] [2021-11-03 05:20:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:01,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2021-11-03 05:20:01,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:01,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057893007] [2021-11-03 05:20:01,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057893007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:20:01,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001533863] [2021-11-03 05:20:01,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 05:20:01,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:20:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:20:01,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:20:01,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 05:20:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:01,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 05:20:01,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-03 05:20:02,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-03 05:20:03,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001533863] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:20:03,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1867085634] [2021-11-03 05:20:03,360 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 05:20:03,360 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 05:20:03,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 05:20:03,360 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 05:20:03,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 05:20:03,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,366 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:20:03,367 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 05:20:03,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-03 05:20:03,372 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 36=[|v_#valid_32|]} [2021-11-03 05:20:03,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-03 05:20:03,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:03,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:03,390 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,429 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-03 05:20:03,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-11-03 05:20:03,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:20:03,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 05:20:03,434 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,439 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-03 05:20:03,443 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,443 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:121 [2021-11-03 05:20:03,447 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-11-03 05:20:03,450 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,451 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:03,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:20:03,453 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,454 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:20:03,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 05:20:03,456 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 05:20:03,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-03 05:20:03,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-03 05:20:03,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:20:03,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:20:03,472 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,478 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-11-03 05:20:03,483 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,483 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:147, output treesize:149 [2021-11-03 05:20:03,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,544 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,550 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,554 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:20:03,555 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:20:03,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 309 [2021-11-03 05:20:03,560 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 290 [2021-11-03 05:20:03,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 291 [2021-11-03 05:20:03,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,569 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:03,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:20:03,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,579 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,580 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:03,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:20:03,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,583 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 05:20:03,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 05:20:03,585 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 05:20:03,587 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 05:20:03,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 05:20:03,589 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,590 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:03,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 05:20:03,592 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 05:20:03,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 325 [2021-11-03 05:20:03,597 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-11-03 05:20:03,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 363 [2021-11-03 05:20:03,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-03 05:20:03,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:20:03,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 05:20:03,631 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-03 05:20:03,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 05:20:03,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 05:20:03,649 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,687 INFO L180 QuantifierPusher]: treesize reduction 106, result has 75.9 percent of original size [2021-11-03 05:20:03,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 345 [2021-11-03 05:20:03,693 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:20:03,693 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:447, output treesize:345 [2021-11-03 05:20:03,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,746 INFO L180 QuantifierPusher]: treesize reduction 42, result has 63.2 percent of original size [2021-11-03 05:20:03,749 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,750 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:20:03,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 05:20:03,751 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:03,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:20:03,763 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 16 treesize of output 12 [2021-11-03 05:20:03,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:20:03,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-03 05:20:03,764 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,767 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:20:03,769 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,769 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:67, output treesize:69 [2021-11-03 05:20:03,773 INFO L180 QuantifierPusher]: treesize reduction 46, result has 48.9 percent of original size [2021-11-03 05:20:03,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:20:03,776 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-11-03 05:20:03,777 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-03 05:20:03,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-11-03 05:20:03,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,786 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 20 treesize of output 20 [2021-11-03 05:20:03,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:20:03,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 05:20:03,788 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 05:20:03,791 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,791 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:62, output treesize:58 [2021-11-03 05:20:03,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,834 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,835 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:03,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 05:20:03,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-03 05:20:03,839 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-03 05:20:03,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-03 05:20:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,854 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 25 treesize of output 25 [2021-11-03 05:20:03,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:03,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:03,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:20:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:20:03,875 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-03 05:20:03,875 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 42 treesize of output 51 [2021-11-03 05:20:03,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 05:20:03,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 05:20:03,879 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,893 INFO L180 QuantifierPusher]: treesize reduction 98, result has 59.3 percent of original size [2021-11-03 05:20:03,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-03 05:20:03,894 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 05:20:03,895 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:245, output treesize:143 [2021-11-03 05:20:03,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,923 INFO L180 QuantifierPusher]: treesize reduction 36, result has 68.1 percent of original size [2021-11-03 05:20:03,925 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 05:20:03,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 05:20:03,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-03 05:20:03,942 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 05:20:03,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-03 05:20:03,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:03,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 05:20:03,944 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:20:03,947 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:03,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-03 05:20:03,948 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 05:20:03,949 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:64 [2021-11-03 05:20:03,963 INFO L180 QuantifierPusher]: treesize reduction 40, result has 54.0 percent of original size [2021-11-03 05:20:03,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 05:20:03,968 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 05:20:04,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 05:20:04,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 05:20:04,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 35, 35] total 75 [2021-11-03 05:20:04,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441317089] [2021-11-03 05:20:04,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-03 05:20:04,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-03 05:20:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3009, Invalid=3311, Unknown=0, NotChecked=0, Total=6320 [2021-11-03 05:20:04,298 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 75 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:05,046 INFO L93 Difference]: Finished difference Result 334 states and 394 transitions. [2021-11-03 05:20:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-03 05:20:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 05:20:05,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:05,049 INFO L225 Difference]: With dead ends: 334 [2021-11-03 05:20:05,049 INFO L226 Difference]: Without dead ends: 308 [2021-11-03 05:20:05,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3009, Invalid=3311, Unknown=0, NotChecked=0, Total=6320 [2021-11-03 05:20:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-03 05:20:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 118. [2021-11-03 05:20:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:05,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2021-11-03 05:20:05,067 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 59 [2021-11-03 05:20:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:05,067 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2021-11-03 05:20:05,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2021-11-03 05:20:05,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-03 05:20:05,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:05,070 INFO L513 BasicCegarLoop]: trace histogram [72, 38, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:05,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:05,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:20:05,286 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:20:05,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:05,288 INFO L85 PathProgramCache]: Analyzing trace with hash -293917426, now seen corresponding path program 5 times [2021-11-03 05:20:05,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:05,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90208226] [2021-11-03 05:20:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:05,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3369 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2021-11-03 05:20:06,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:06,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90208226] [2021-11-03 05:20:06,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90208226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:20:06,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767291886] [2021-11-03 05:20:06,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:20:06,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:20:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:20:06,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:20:06,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef450fa-8d27-4592-a3d6-e2ab220e0436/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process