./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:54:29,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:54:29,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:54:29,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:54:29,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:54:29,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:54:29,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:54:29,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:54:29,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:54:29,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:54:29,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:54:29,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:54:29,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:54:29,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:54:29,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:54:29,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:54:29,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:54:29,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:54:29,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:54:29,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:54:29,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:54:29,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:54:29,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:54:29,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:54:29,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:54:29,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:54:29,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:54:29,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:54:29,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:54:29,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:54:29,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:54:29,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:54:29,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:54:29,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:54:29,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:54:29,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:54:29,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:54:29,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:54:29,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:54:29,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:54:29,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:54:29,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:54:29,929 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:54:29,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:54:29,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:54:29,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:54:29,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:54:29,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:54:29,931 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:54:29,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:54:29,932 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:54:29,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:54:29,933 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:54:29,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:54:29,934 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:54:29,934 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:54:29,934 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:54:29,935 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:54:29,935 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:54:29,935 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:54:29,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:54:29,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:54:29,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:54:29,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:54:29,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:54:29,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:54:29,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:54:29,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:54:29,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:54:29,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:54:29,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:54:29,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:54:29,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:54:29,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:54:29,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:29,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:54:29,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:54:29,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:54:29,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:54:29,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:54:29,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:54:29,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:54:29,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:54:29,943 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_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f1ddce0da39afb2e81d3f6974a6168ade2d49435b1ce063903c0017c6d40b05 [2021-11-20 23:54:30,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:54:30,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:54:30,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:54:30,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:54:30,262 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:54:30,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-20 23:54:30,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/data/de0fb658c/13cf48156e69458db57b87e059646cf9/FLAG12ca40d03 [2021-11-20 23:54:30,954 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:54:30,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i [2021-11-20 23:54:30,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/data/de0fb658c/13cf48156e69458db57b87e059646cf9/FLAG12ca40d03 [2021-11-20 23:54:31,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/data/de0fb658c/13cf48156e69458db57b87e059646cf9 [2021-11-20 23:54:31,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:54:31,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:54:31,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:31,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:54:31,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:54:31,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:31" (1/1) ... [2021-11-20 23:54:31,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8341b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:31, skipping insertion in model container [2021-11-20 23:54:31,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:31" (1/1) ... [2021-11-20 23:54:31,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:54:31,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:54:31,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-20 23:54:31,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:31,990 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:54:32,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-2.i[33022,33035] [2021-11-20 23:54:32,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:32,254 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:54:32,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32 WrapperNode [2021-11-20 23:54:32,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:32,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:32,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:54:32,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:54:32,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,458 INFO L137 Inliner]: procedures = 177, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2330 [2021-11-20 23:54:32,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:32,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:54:32,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:54:32,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:54:32,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:54:32,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:54:32,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:54:32,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:54:32,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (1/1) ... [2021-11-20 23:54:32,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:32,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:32,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:54:32,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:54:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-20 23:54:32,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-20 23:54:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:54:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:54:32,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:54:32,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:54:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:54:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:54:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:54:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:54:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:54:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:54:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:54:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:54:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:54:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:54:32,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:54:32,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:54:33,049 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:54:33,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:54:34,883 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:54:35,672 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:54:35,672 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-20 23:54:35,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:35 BoogieIcfgContainer [2021-11-20 23:54:35,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:54:35,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:54:35,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:54:35,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:54:35,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:31" (1/3) ... [2021-11-20 23:54:35,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aff0719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:35, skipping insertion in model container [2021-11-20 23:54:35,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:32" (2/3) ... [2021-11-20 23:54:35,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aff0719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:54:35, skipping insertion in model container [2021-11-20 23:54:35,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:54:35" (3/3) ... [2021-11-20 23:54:35,688 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-2.i [2021-11-20 23:54:35,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:54:35,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:54:35,761 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:54:35,778 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 [2021-11-20 23:54:35,778 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:54:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 246 states have (on average 1.8252032520325203) internal successors, (449), 251 states have internal predecessors, (449), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-20 23:54:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 23:54:35,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:35,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:35,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:35,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:35,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1013260908, now seen corresponding path program 1 times [2021-11-20 23:54:35,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:35,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578161287] [2021-11-20 23:54:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:35,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:36,050 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:36,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578161287] [2021-11-20 23:54:36,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578161287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:36,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:36,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:54:36,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106679538] [2021-11-20 23:54:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:36,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:54:36,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:54:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:54:36,103 INFO L87 Difference]: Start difference. First operand has 265 states, 246 states have (on average 1.8252032520325203) internal successors, (449), 251 states have internal predecessors, (449), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:37,379 INFO L93 Difference]: Finished difference Result 529 states and 961 transitions. [2021-11-20 23:54:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:54:37,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 23:54:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:37,396 INFO L225 Difference]: With dead ends: 529 [2021-11-20 23:54:37,396 INFO L226 Difference]: Without dead ends: 249 [2021-11-20 23:54:37,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:54:37,405 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:37,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:54:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-20 23:54:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-20 23:54:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 231 states have (on average 1.199134199134199) internal successors, (277), 236 states have internal predecessors, (277), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 23:54:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 304 transitions. [2021-11-20 23:54:37,465 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 304 transitions. Word has length 12 [2021-11-20 23:54:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:37,466 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 304 transitions. [2021-11-20 23:54:37,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 304 transitions. [2021-11-20 23:54:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-20 23:54:37,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:37,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:37,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:54:37,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:37,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1808167895, now seen corresponding path program 1 times [2021-11-20 23:54:37,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:37,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508343962] [2021-11-20 23:54:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:37,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:37,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:37,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508343962] [2021-11-20 23:54:37,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508343962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:37,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:37,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:54:37,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592286116] [2021-11-20 23:54:37,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:37,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:54:37,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:37,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:54:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:54:37,551 INFO L87 Difference]: Start difference. First operand 249 states and 304 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:39,990 INFO L93 Difference]: Finished difference Result 425 states and 521 transitions. [2021-11-20 23:54:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:54:39,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-20 23:54:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:39,994 INFO L225 Difference]: With dead ends: 425 [2021-11-20 23:54:39,994 INFO L226 Difference]: Without dead ends: 276 [2021-11-20 23:54:39,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:54:39,997 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 27 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:39,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 770 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 23:54:40,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-20 23:54:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 251. [2021-11-20 23:54:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 233 states have (on average 1.1974248927038627) internal successors, (279), 238 states have internal predecessors, (279), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 23:54:40,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 306 transitions. [2021-11-20 23:54:40,020 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 306 transitions. Word has length 24 [2021-11-20 23:54:40,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:40,021 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 306 transitions. [2021-11-20 23:54:40,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:40,022 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 306 transitions. [2021-11-20 23:54:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 23:54:40,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:40,025 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:40,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:54:40,025 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1787107309, now seen corresponding path program 1 times [2021-11-20 23:54:40,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:40,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075041639] [2021-11-20 23:54:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:40,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:40,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:54:40,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437819886] [2021-11-20 23:54:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:40,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:40,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:54:40,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:54:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:40,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:54:40,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:54:40,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:54:40,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:40,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075041639] [2021-11-20 23:54:40,710 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:54:40,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437819886] [2021-11-20 23:54:40,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437819886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:40,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:40,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:54:40,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879826716] [2021-11-20 23:54:40,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:40,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:54:40,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:40,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:54:40,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:54:40,713 INFO L87 Difference]: Start difference. First operand 251 states and 306 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:43,476 INFO L93 Difference]: Finished difference Result 614 states and 746 transitions. [2021-11-20 23:54:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:54:43,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-20 23:54:43,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:43,480 INFO L225 Difference]: With dead ends: 614 [2021-11-20 23:54:43,480 INFO L226 Difference]: Without dead ends: 366 [2021-11-20 23:54:43,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:54:43,482 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 120 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:43,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 532 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 23:54:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-20 23:54:43,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 362. [2021-11-20 23:54:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 1.1799410029498525) internal successors, (400), 344 states have internal predecessors, (400), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-20 23:54:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 437 transitions. [2021-11-20 23:54:43,511 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 437 transitions. Word has length 49 [2021-11-20 23:54:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:43,511 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 437 transitions. [2021-11-20 23:54:43,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:54:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 437 transitions. [2021-11-20 23:54:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 23:54:43,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:43,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:43,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:54:43,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:43,735 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:43,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash -338981431, now seen corresponding path program 1 times [2021-11-20 23:54:43,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161463962] [2021-11-20 23:54:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:43,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:43,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:54:43,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002052040] [2021-11-20 23:54:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:43,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:43,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:43,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:54:43,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:54:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:44,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:54:44,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:44,201 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 11 treesize of output 7 [2021-11-20 23:54:44,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-20 23:54:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:54:44,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:54:44,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:44,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161463962] [2021-11-20 23:54:44,417 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:54:44,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002052040] [2021-11-20 23:54:44,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002052040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:44,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:44,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:54:44,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805492003] [2021-11-20 23:54:44,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:44,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:54:44,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:54:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:54:44,420 INFO L87 Difference]: Start difference. First operand 362 states and 437 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:54:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:48,259 INFO L93 Difference]: Finished difference Result 674 states and 815 transitions. [2021-11-20 23:54:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:54:48,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2021-11-20 23:54:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:48,263 INFO L225 Difference]: With dead ends: 674 [2021-11-20 23:54:48,263 INFO L226 Difference]: Without dead ends: 362 [2021-11-20 23:54:48,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:54:48,265 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 12 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:48,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 772 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-20 23:54:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-20 23:54:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-20 23:54:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 1.176991150442478) internal successors, (399), 344 states have internal predecessors, (399), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-20 23:54:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 436 transitions. [2021-11-20 23:54:48,284 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 436 transitions. Word has length 62 [2021-11-20 23:54:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:48,284 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 436 transitions. [2021-11-20 23:54:48,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:54:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 436 transitions. [2021-11-20 23:54:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-20 23:54:48,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:48,289 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:48,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:48,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:48,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:48,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:48,515 INFO L85 PathProgramCache]: Analyzing trace with hash -334329145, now seen corresponding path program 1 times [2021-11-20 23:54:48,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:48,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252622032] [2021-11-20 23:54:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:48,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:48,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:54:48,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744171178] [2021-11-20 23:54:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:48,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:48,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:48,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:54:48,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:54:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:48,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:54:48,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:54:49,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:54:49,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:49,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252622032] [2021-11-20 23:54:49,164 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:54:49,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744171178] [2021-11-20 23:54:49,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744171178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:49,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:49,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:54:49,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059219098] [2021-11-20 23:54:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:49,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:54:49,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:54:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:54:49,166 INFO L87 Difference]: Start difference. First operand 362 states and 436 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:54:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:51,496 INFO L93 Difference]: Finished difference Result 820 states and 988 transitions. [2021-11-20 23:54:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:54:51,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2021-11-20 23:54:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:51,500 INFO L225 Difference]: With dead ends: 820 [2021-11-20 23:54:51,500 INFO L226 Difference]: Without dead ends: 484 [2021-11-20 23:54:51,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:54:51,502 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 110 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:51,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 530 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 23:54:51,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-20 23:54:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 429. [2021-11-20 23:54:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 403 states have (on average 1.1687344913151365) internal successors, (471), 408 states have internal predecessors, (471), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 23:54:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 514 transitions. [2021-11-20 23:54:51,526 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 514 transitions. Word has length 83 [2021-11-20 23:54:51,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:51,526 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 514 transitions. [2021-11-20 23:54:51,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 23:54:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 514 transitions. [2021-11-20 23:54:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 23:54:51,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:51,530 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:51,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:51,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:51,743 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1903584894, now seen corresponding path program 1 times [2021-11-20 23:54:51,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:51,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516926124] [2021-11-20 23:54:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:51,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:51,776 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:54:51,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469910547] [2021-11-20 23:54:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:51,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:51,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:51,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:54:51,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:54:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:54:52,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:54:52,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:54:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 23:54:52,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:54:52,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:54:52,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516926124] [2021-11-20 23:54:52,462 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:54:52,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469910547] [2021-11-20 23:54:52,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469910547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:54:52,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:54:52,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:54:52,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176947309] [2021-11-20 23:54:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:54:52,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:54:52,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:54:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:54:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:54:52,464 INFO L87 Difference]: Start difference. First operand 429 states and 514 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:54:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:54:53,652 INFO L93 Difference]: Finished difference Result 719 states and 867 transitions. [2021-11-20 23:54:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:54:53,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2021-11-20 23:54:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:54:53,656 INFO L225 Difference]: With dead ends: 719 [2021-11-20 23:54:53,656 INFO L226 Difference]: Without dead ends: 351 [2021-11-20 23:54:53,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:54:53,658 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 438 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:54:53,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 334 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:54:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-20 23:54:53,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2021-11-20 23:54:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 330 states have (on average 1.1666666666666667) internal successors, (385), 335 states have internal predecessors, (385), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 23:54:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 418 transitions. [2021-11-20 23:54:53,677 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 418 transitions. Word has length 96 [2021-11-20 23:54:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:54:53,680 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 418 transitions. [2021-11-20 23:54:53,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 23:54:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 418 transitions. [2021-11-20 23:54:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 23:54:53,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:54:53,683 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:54:53,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:54:53,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-20 23:54:53,908 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:54:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:54:53,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1222209427, now seen corresponding path program 1 times [2021-11-20 23:54:53,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:54:53,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163357765] [2021-11-20 23:54:53,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:53,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:54:53,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:54:53,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832919326] [2021-11-20 23:54:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:54:53,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:54:53,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:53,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:54:53,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:01:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:56,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:01:56,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:01:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:01:56,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:01:56,636 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:56,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163357765] [2021-11-21 00:01:56,637 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:01:56,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832919326] [2021-11-21 00:01:56,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832919326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:56,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:01:56,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84622947] [2021-11-21 00:01:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:56,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:01:56,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:01:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:01:56,639 INFO L87 Difference]: Start difference. First operand 351 states and 418 transitions. Second operand has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:02:00,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:02:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:00,999 INFO L93 Difference]: Finished difference Result 684 states and 823 transitions. [2021-11-21 00:02:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:02:01,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 103 [2021-11-21 00:02:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:01,003 INFO L225 Difference]: With dead ends: 684 [2021-11-21 00:02:01,003 INFO L226 Difference]: Without dead ends: 353 [2021-11-21 00:02:01,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:02:01,005 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 1 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:01,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 806 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 00:02:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-21 00:02:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-11-21 00:02:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 331 states have (on average 1.1691842900302114) internal successors, (387), 337 states have internal predecessors, (387), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2021-11-21 00:02:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2021-11-21 00:02:01,025 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 103 [2021-11-21 00:02:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:01,025 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2021-11-21 00:02:01,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:02:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2021-11-21 00:02:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-21 00:02:01,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:01,027 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:01,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:02:01,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 00:02:01,255 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:01,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:01,255 INFO L85 PathProgramCache]: Analyzing trace with hash 221127857, now seen corresponding path program 1 times [2021-11-21 00:02:01,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:01,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942392224] [2021-11-21 00:02:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:01,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:01,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:02:01,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059827507] [2021-11-21 00:02:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:01,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:02:01,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:02:01,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:02:01,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8d70d-e911-4b82-9705-84101fa7a6c6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:05:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:00,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:05:00,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:05:00,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 00:05:01,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:05:01,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942392224] [2021-11-21 00:05:01,090 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:05:01,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059827507] [2021-11-21 00:05:01,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059827507] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:05:01,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450671762] [2021-11-21 00:05:01,114 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2021-11-21 00:05:01,114 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:05:01,119 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:05:01,123 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:05:01,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:05:01,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,426 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:05:01,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:05:01,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:05:01,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:05:01,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:05:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 00:05:01,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 00:05:01,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,688 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:05:01,688 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 1 case distinctions, treesize of input 52 treesize of output 53 [2021-11-21 00:05:01,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,756 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:05:01,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 00:05:01,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 00:05:01,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:01,848 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:05:01,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:05:03,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-21 00:05:03,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-21 00:05:03,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 00:05:03,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 00:05:03,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 00:05:03,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 00:05:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-21 00:05:03,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:03,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 00:05:04,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,089 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 41 treesize of output 46 [2021-11-21 00:05:04,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,168 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:05:04,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 00:05:04,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,311 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 110 treesize of output 115 [2021-11-21 00:05:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,425 INFO L354 Elim1Store]: treesize reduction 194, result has 22.4 percent of original size [2021-11-21 00:05:04,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 127 treesize of output 163 [2021-11-21 00:05:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:04,492 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-21 00:05:04,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 156 [2021-11-21 00:05:05,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:05:05,084 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 11 treesize of output 7 [2021-11-21 00:05:05,094 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 11 treesize of output 7 [2021-11-21 00:05:05,159 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-21 00:05:05,159 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 85 treesize of output 88 [2021-11-21 00:05:05,187 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-21 00:05:05,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 91 [2021-11-21 00:05:05,218 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-21 00:05:05,218 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 91 treesize of output 94 [2021-11-21 00:05:05,333 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 14 treesize of output 10 [2021-11-21 00:05:05,343 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 [2021-11-21 00:05:05,351 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 14 treesize of output 10 [2021-11-21 00:05:05,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 00:05:05,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 00:05:05,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 00:05:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 00:05:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:05,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 00:05:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:06,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:06,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:06,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:06,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 00:05:12,838 WARN L227 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:05:12,839 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 00:05:12,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-21 00:05:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:22,767 WARN L227 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:05:22,768 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 00:05:22,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-21 00:05:35,360 WARN L227 SmtUtils]: Spent 12.48s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:05:35,361 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-21 00:05:35,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2852 treesize of output 2682 [2021-11-21 00:05:35,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:35,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:35,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:37,194 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-21 00:05:37,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25950 treesize of output 25981 [2021-11-21 00:05:37,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:37,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:38,000 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 00:05:38,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25960 treesize of output 25974 [2021-11-21 00:05:39,545 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:39,636 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:40,083 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:40,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:40,377 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 00:05:40,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 00:05:41,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:41,273 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-21 00:05:41,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 44 [2021-11-21 00:05:42,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:42,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:42,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:42,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 817 treesize of output 369 [2021-11-21 00:05:42,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:42,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:42,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:42,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 815 treesize of output 365 [2021-11-21 00:05:43,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:43,810 INFO L244 Elim1Store]: Index analysis took 247 ms [2021-11-21 00:05:45,373 INFO L354 Elim1Store]: treesize reduction 520, result has 72.0 percent of original size [2021-11-21 00:05:45,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 826 treesize of output 1708 [2021-11-21 00:05:47,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:47,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:47,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:47,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:47,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:47,793 INFO L354 Elim1Store]: treesize reduction 360, result has 68.8 percent of original size [2021-11-21 00:05:47,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 805 treesize of output 1161 [2021-11-21 00:05:48,255 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:48,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:48,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:48,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:48,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:48,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:48,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:48,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:48,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:48,925 INFO L244 Elim1Store]: Index analysis took 122 ms [2021-11-21 00:05:49,095 INFO L354 Elim1Store]: treesize reduction 4, result has 98.2 percent of original size [2021-11-21 00:05:49,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 805 treesize of output 583 [2021-11-21 00:05:49,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:51,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:51,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:51,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:51,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:51,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:51,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:51,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:51,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:51,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:51,946 INFO L244 Elim1Store]: Index analysis took 136 ms [2021-11-21 00:05:51,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 817 treesize of output 369 [2021-11-21 00:05:52,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:52,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:52,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 796 treesize of output 366 [2021-11-21 00:05:53,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:53,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:53,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:53,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:53,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:53,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:53,369 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 00:05:53,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 817 treesize of output 369 [2021-11-21 00:05:54,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:54,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:54,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:54,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:54,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:54,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:54,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:54,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:54,622 INFO L244 Elim1Store]: Index analysis took 119 ms [2021-11-21 00:05:54,743 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:05:54,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 749 treesize of output 559 [2021-11-21 00:05:55,034 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:55,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:55,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:55,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:05:55,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:55,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:55,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 728 treesize of output 366 [2021-11-21 00:05:55,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:05:57,224 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-21 00:05:57,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1660 treesize of output 1668 [2021-11-21 00:05:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:57,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2021-11-21 00:05:58,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:58,470 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:05:58,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 00:05:58,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:58,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:58,919 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 00:05:58,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 16 [2021-11-21 00:05:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:59,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:05:59,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 47 [2021-11-21 00:06:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver