./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/packet_filter.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/packet_filter.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7 --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 d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:33:55,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:33:55,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:33:55,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:33:55,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:33:55,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:33:55,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:33:55,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:33:55,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:33:55,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:33:55,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:33:55,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:33:55,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:33:55,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:33:55,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:33:55,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:33:55,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:33:55,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:33:55,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:33:55,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:33:55,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:33:55,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:33:55,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:33:55,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:33:55,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:33:55,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:33:55,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:33:55,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:33:55,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:33:55,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:33:55,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:33:55,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:33:55,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:33:55,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:33:55,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:33:55,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:33:55,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:33:55,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:33:55,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:33:55,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:33:55,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:33:55,875 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:33:55,929 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:33:55,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:33:55,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:33:55,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:33:55,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:33:55,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:33:55,938 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:33:55,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:33:55,939 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:33:55,939 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:33:55,940 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:33:55,940 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:33:55,941 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:33:55,941 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:33:55,941 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:33:55,941 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:33:55,942 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:33:55,942 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:33:55,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:33:55,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:33:55,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:33:55,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:33:55,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:33:55,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:33:55,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:33:55,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:33:55,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:33:55,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:33:55,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:33:55,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:33:55,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:33:55,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:33:55,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:33:55,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:33:55,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:33:55,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:33:55,949 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:33:55,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:33:55,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:33:55,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:33:55,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:33:55,950 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_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d604fdd8f7c4d34db0106d8a0ff422218ae80e9ee6eb03f691b84d2fcc8ad49f [2021-11-25 19:33:56,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:33:56,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:33:56,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:33:56,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:33:56,262 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:33:56,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/heap-data/packet_filter.i [2021-11-25 19:33:56,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/data/baa5a9ecc/d634f4a83fd445f3ac70bf8029f95e6b/FLAG91b7ee57f [2021-11-25 19:33:56,921 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:33:56,921 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/sv-benchmarks/c/heap-data/packet_filter.i [2021-11-25 19:33:56,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/data/baa5a9ecc/d634f4a83fd445f3ac70bf8029f95e6b/FLAG91b7ee57f [2021-11-25 19:33:57,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/data/baa5a9ecc/d634f4a83fd445f3ac70bf8029f95e6b [2021-11-25 19:33:57,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:33:57,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:33:57,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:33:57,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:33:57,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:33:57,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54077ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57, skipping insertion in model container [2021-11-25 19:33:57,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:33:57,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:33:57,663 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_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2021-11-25 19:33:57,670 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_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2021-11-25 19:33:57,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:33:57,683 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:33:57,721 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_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2021-11-25 19:33:57,724 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_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2021-11-25 19:33:57,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:33:57,769 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:33:57,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57 WrapperNode [2021-11-25 19:33:57,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:33:57,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:33:57,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:33:57,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:33:57,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,842 INFO L137 Inliner]: procedures = 130, calls = 86, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 160 [2021-11-25 19:33:57,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:33:57,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:33:57,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:33:57,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:33:57,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:33:57,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:33:57,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:33:57,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:33:57,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (1/1) ... [2021-11-25 19:33:57,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:33:57,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:33:57,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:33:57,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:33:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:33:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:33:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:33:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:33:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2021-11-25 19:33:57,989 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2021-11-25 19:33:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:33:57,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:33:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:33:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2021-11-25 19:33:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure send [2021-11-25 19:33:57,990 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2021-11-25 19:33:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:33:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:33:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:33:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:33:57,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:33:58,119 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:33:58,121 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:33:58,523 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:33:58,597 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:33:58,597 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:33:58,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:58 BoogieIcfgContainer [2021-11-25 19:33:58,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:33:58,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:33:58,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:33:58,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:33:58,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:33:57" (1/3) ... [2021-11-25 19:33:58,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9b7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:33:58, skipping insertion in model container [2021-11-25 19:33:58,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:33:57" (2/3) ... [2021-11-25 19:33:58,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9b7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:33:58, skipping insertion in model container [2021-11-25 19:33:58,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:33:58" (3/3) ... [2021-11-25 19:33:58,609 INFO L111 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2021-11-25 19:33:58,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:33:58,615 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:33:58,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:33:58,669 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 [2021-11-25 19:33:58,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:33:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:33:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:33:58,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:58,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:33:58,692 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:58,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash 504382279, now seen corresponding path program 1 times [2021-11-25 19:33:58,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638685268] [2021-11-25 19:33:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:58,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:58,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638685268] [2021-11-25 19:33:58,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638685268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:33:58,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:33:58,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:33:58,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022162443] [2021-11-25 19:33:58,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:33:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:33:58,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:33:58,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:33:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:33:58,900 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 25 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:33:58,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:58,982 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-11-25 19:33:58,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:33:58,984 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:33:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:58,993 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:33:58,993 INFO L226 Difference]: Without dead ends: 32 [2021-11-25 19:33:58,996 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 [2021-11-25 19:33:59,000 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:59,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:33:59,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-25 19:33:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-25 19:33:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:33:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-25 19:33:59,042 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 6 [2021-11-25 19:33:59,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:33:59,042 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-25 19:33:59,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:33:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-25 19:33:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:33:59,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:59,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:33:59,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:33:59,045 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1567125573, now seen corresponding path program 1 times [2021-11-25 19:33:59,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811445574] [2021-11-25 19:33:59,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:59,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:59,201 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:59,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811445574] [2021-11-25 19:33:59,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811445574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:33:59,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:33:59,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:33:59,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106622761] [2021-11-25 19:33:59,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:33:59,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:33:59,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:33:59,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:33:59,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:33:59,209 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:33:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:59,405 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-11-25 19:33:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:33:59,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 19:33:59,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:59,408 INFO L225 Difference]: With dead ends: 58 [2021-11-25 19:33:59,408 INFO L226 Difference]: Without dead ends: 42 [2021-11-25 19:33:59,409 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 [2021-11-25 19:33:59,410 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:59,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 78 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:33:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-25 19:33:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2021-11-25 19:33:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:33:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-11-25 19:33:59,434 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 7 [2021-11-25 19:33:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:33:59,434 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-11-25 19:33:59,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:33:59,439 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-11-25 19:33:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:33:59,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:59,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:33:59,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:33:59,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1336261225, now seen corresponding path program 1 times [2021-11-25 19:33:59,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:59,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49990221] [2021-11-25 19:33:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:59,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:59,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:59,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49990221] [2021-11-25 19:33:59,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49990221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:33:59,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:33:59,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:33:59,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167758814] [2021-11-25 19:33:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:33:59,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:33:59,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:33:59,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:33:59,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:33:59,571 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:33:59,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:33:59,718 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-25 19:33:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:33:59,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:33:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:33:59,721 INFO L225 Difference]: With dead ends: 46 [2021-11-25 19:33:59,721 INFO L226 Difference]: Without dead ends: 34 [2021-11-25 19:33:59,722 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 [2021-11-25 19:33:59,723 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:33:59,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 84 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:33:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-25 19:33:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-25 19:33:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:33:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-11-25 19:33:59,731 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 8 [2021-11-25 19:33:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:33:59,733 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-11-25 19:33:59,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:33:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-11-25 19:33:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:33:59,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:33:59,736 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:33:59,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:33:59,737 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:33:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:33:59,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1327786257, now seen corresponding path program 1 times [2021-11-25 19:33:59,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:33:59,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823937588] [2021-11-25 19:33:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:59,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:33:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:33:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:59,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:33:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823937588] [2021-11-25 19:33:59,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823937588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:33:59,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387511697] [2021-11-25 19:33:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:33:59,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:33:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:34:00,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:34:00,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:34:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:00,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-25 19:34:00,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:34:00,340 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:34:00,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 18 [2021-11-25 19:34:00,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:00,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:34:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:00,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:34:00,495 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-25 19:34:00,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-25 19:34:00,570 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 15 treesize of output 7 [2021-11-25 19:34:00,593 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 15 treesize of output 7 [2021-11-25 19:34:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:00,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:34:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:01,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387511697] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:34:01,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [641438735] [2021-11-25 19:34:01,078 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:34:01,078 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:34:01,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:34:01,088 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:34:01,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:34:01,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,173 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-25 19:34:01,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2021-11-25 19:34:01,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,243 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 19:34:01,243 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 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-25 19:34:01,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-11-25 19:34:01,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,812 INFO L354 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2021-11-25 19:34:01,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 case distinctions, treesize of input 49 treesize of output 73 [2021-11-25 19:34:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:01,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:01,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2021-11-25 19:34:02,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2021-11-25 19:34:02,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-11-25 19:34:02,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2021-11-25 19:34:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:02,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,724 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:34:02,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 61 [2021-11-25 19:34:02,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:02,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:03,006 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:34:04,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [641438735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:04,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:34:04,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 10 [2021-11-25 19:34:04,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086960674] [2021-11-25 19:34:04,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:04,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:34:04,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:04,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:34:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:34:04,246 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:34:04,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:04,473 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2021-11-25 19:34:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:34:04,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 19:34:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:04,475 INFO L225 Difference]: With dead ends: 62 [2021-11-25 19:34:04,475 INFO L226 Difference]: Without dead ends: 46 [2021-11-25 19:34:04,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:34:04,477 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:04,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 61 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2021-11-25 19:34:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-25 19:34:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-11-25 19:34:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:34:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-11-25 19:34:04,487 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 11 [2021-11-25 19:34:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:04,488 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-11-25 19:34:04,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:34:04,488 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-11-25 19:34:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:34:04,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:04,489 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:34:04,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:34:04,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:34:04,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:04,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1788290275, now seen corresponding path program 1 times [2021-11-25 19:34:04,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:04,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258888000] [2021-11-25 19:34:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:04,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:04,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:04,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258888000] [2021-11-25 19:34:04,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258888000] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:34:04,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463699588] [2021-11-25 19:34:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:04,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:34:04,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:34:04,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:34:04,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:34:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:04,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-25 19:34:04,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:34:04,931 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:34:04,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 19:34:04,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:04,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:34:04,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:04,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 19:34:04,986 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:34:04,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:34:05,032 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 15 treesize of output 7 [2021-11-25 19:34:05,035 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 15 treesize of output 7 [2021-11-25 19:34:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:05,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:34:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:05,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463699588] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:34:05,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [283107564] [2021-11-25 19:34:05,193 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 19:34:05,194 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:34:05,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:34:05,194 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:34:05,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:34:05,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,247 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-25 19:34:05,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2021-11-25 19:34:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,304 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 19:34:05,304 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 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-25 19:34:05,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-11-25 19:34:05,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:05,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,707 INFO L354 Elim1Store]: treesize reduction 148, result has 18.2 percent of original size [2021-11-25 19:34:05,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 case distinctions, treesize of input 49 treesize of output 73 [2021-11-25 19:34:05,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2021-11-25 19:34:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:05,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 57 [2021-11-25 19:34:06,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-11-25 19:34:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:06,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2021-11-25 19:34:06,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,431 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:34:06,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 61 [2021-11-25 19:34:06,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:06,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:06,698 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:34:14,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [283107564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:34:14,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:34:14,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 11 [2021-11-25 19:34:14,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9190642] [2021-11-25 19:34:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:34:14,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:34:14,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:34:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:34:14,076 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:34:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:34:14,235 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-11-25 19:34:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:34:14,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 19:34:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:34:14,236 INFO L225 Difference]: With dead ends: 50 [2021-11-25 19:34:14,236 INFO L226 Difference]: Without dead ends: 38 [2021-11-25 19:34:14,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:34:14,238 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:34:14,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 89 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2021-11-25 19:34:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-25 19:34:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-11-25 19:34:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 28 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:34:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-11-25 19:34:14,245 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 12 [2021-11-25 19:34:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:34:14,245 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-11-25 19:34:14,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:34:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-11-25 19:34:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:34:14,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:34:14,247 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:34:14,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:34:14,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:34:14,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:34:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:34:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1449896969, now seen corresponding path program 1 times [2021-11-25 19:34:14,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:34:14,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605183023] [2021-11-25 19:34:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:14,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:34:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:14,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:34:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605183023] [2021-11-25 19:34:14,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605183023] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:34:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141950124] [2021-11-25 19:34:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:34:14,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:34:14,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:34:14,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:34:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006aeeeb-a882-4d81-928d-0ea7cb0e96a5/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:34:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:34:14,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 19:34:14,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:34:15,064 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 21 treesize of output 9 [2021-11-25 19:34:15,120 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2021-11-25 19:34:15,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 38 treesize of output 45 [2021-11-25 19:34:15,148 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:34:15,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 45 [2021-11-25 19:34:15,180 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:34:15,181 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-11-25 19:34:15,215 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 19:34:15,215 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-11-25 19:34:15,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-11-25 19:34:15,264 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-11-25 19:34:15,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 42 [2021-11-25 19:34:15,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-11-25 19:34:15,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-11-25 19:34:15,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2021-11-25 19:34:15,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-25 19:34:15,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-25 19:34:15,616 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:34:15,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 53 [2021-11-25 19:34:15,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 41 treesize of output 29 [2021-11-25 19:34:15,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-25 19:34:15,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-25 19:34:15,756 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 7 treesize of output 3 [2021-11-25 19:34:15,969 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 34 treesize of output 22 [2021-11-25 19:34:15,974 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 15 treesize of output 7 [2021-11-25 19:34:16,062 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:34:16,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 56 [2021-11-25 19:34:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:16,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:34:16,687 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:34:16,687 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 96 [2021-11-25 19:34:16,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:34:16,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 74 treesize of output 83 [2021-11-25 19:34:16,732 INFO L354 Elim1Store]: treesize reduction 17, result has 70.7 percent of original size [2021-11-25 19:34:16,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 69 [2021-11-25 19:34:16,746 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 19:34:16,747 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 2 case distinctions, treesize of input 67 treesize of output 51 [2021-11-25 19:34:16,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-25 19:34:16,922 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-25 19:34:16,922 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 1 [2021-11-25 19:34:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:17,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141950124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:34:17,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708268717] [2021-11-25 19:34:17,043 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 19:34:17,043 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:34:17,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:34:17,043 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:34:17,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:34:17,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,096 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-25 19:34:17,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2021-11-25 19:34:17,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,146 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 19:34:17,146 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 6 case distinctions, treesize of input 39 treesize of output 53 [2021-11-25 19:34:17,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2021-11-25 19:34:17,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 19 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 43 [2021-11-25 19:34:17,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:17,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 42 [2021-11-25 19:34:17,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:17,532 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-25 19:34:17,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 61 [2021-11-25 19:34:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:18,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:18,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:18,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:18,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:22,118 INFO L354 Elim1Store]: treesize reduction 744, result has 48.6 percent of original size [2021-11-25 19:34:22,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 42 case distinctions, treesize of input 4318182 treesize of output 710351 [2021-11-25 19:34:36,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 64 [2021-11-25 19:34:39,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 49 [2021-11-25 19:34:45,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:45,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:45,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:45,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:45,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 37 [2021-11-25 19:34:52,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:52,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:52,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:52,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:34:52,642 INFO L354 Elim1Store]: treesize reduction 108, result has 43.8 percent of original size [2021-11-25 19:34:52,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 96 [2021-11-25 19:35:05,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:05,611 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 23 treesize of output 17 [2021-11-25 19:35:11,836 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 18 treesize of output 7 [2021-11-25 19:35:17,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:17,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 11 [2021-11-25 19:35:21,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:21,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:21,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:21,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:21,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:21,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:21,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:21,707 INFO L354 Elim1Store]: treesize reduction 368, result has 48.7 percent of original size [2021-11-25 19:35:21,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 20 case distinctions, treesize of input 111962 treesize of output 23763 [2021-11-25 19:35:31,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:32,962 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:33,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:33,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:33,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:33,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:33,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:33,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:33,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:33,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 24 [2021-11-25 19:35:35,917 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:37,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:37,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:37,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:37,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:37,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:37,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:37,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:37,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-25 19:35:39,213 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:39,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:40,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:40,764 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:41,050 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:41,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:41,210 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:41,278 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:41,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:41,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:41,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:41,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:41,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 16 [2021-11-25 19:35:42,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:42,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:42,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:42,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 24 [2021-11-25 19:35:43,375 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:43,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:43,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:43,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:43,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:43,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:43,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:43,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:43,853 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-25 19:35:43,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 19 [2021-11-25 19:35:43,963 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:44,130 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:44,247 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:44,296 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:44,440 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:44,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:45,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:46,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:46,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:46,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:46,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:46,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:46,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:46,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 32 [2021-11-25 19:35:46,494 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:46,611 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:46,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:46,872 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:46,932 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,041 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:47,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:47,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:47,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:47,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:47,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:47,565 INFO L354 Elim1Store]: treesize reduction 53, result has 20.9 percent of original size [2021-11-25 19:35:47,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 49 [2021-11-25 19:35:47,635 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,696 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,756 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:47,959 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:48,100 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:48,157 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:48,229 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:48,364 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:48,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 53 [2021-11-25 19:35:48,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:48,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2021-11-25 19:35:49,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:49,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:49,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:49,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:49,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:49,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:49,994 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 291 treesize of output 241 [2021-11-25 19:35:50,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:50,149 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:50,192 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:50,337 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:50,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:50,414 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:50,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 298 treesize of output 244 [2021-11-25 19:35:50,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 51 [2021-11-25 19:35:50,774 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:50,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 213 [2021-11-25 19:35:50,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:50,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 328 treesize of output 286 [2021-11-25 19:35:51,063 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:51,106 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:51,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2021-11-25 19:35:51,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 144 [2021-11-25 19:35:51,441 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:51,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 166 [2021-11-25 19:35:51,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:51,875 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 31 treesize of output 13 [2021-11-25 19:35:52,154 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,225 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,363 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,413 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 0 case distinctions, treesize of input 79 treesize of output 47 [2021-11-25 19:35:52,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,486 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 0 case distinctions, treesize of input 179 treesize of output 141 [2021-11-25 19:35:52,603 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,671 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,753 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,793 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,828 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:52,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:52,881 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 0 case distinctions, treesize of input 321 treesize of output 283 [2021-11-25 19:35:53,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,563 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 205 treesize of output 163 [2021-11-25 19:35:53,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:35:53,652 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 252 treesize of output 210 [2021-11-25 19:35:53,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:53,783 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:53,830 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:53,873 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:54,040 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:54,094 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:54,138 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:54,182 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:54,251 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:35:54,283 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:36:04,295 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 1586 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:37:01,895 WARN L227 SmtUtils]: Spent 29.26s on a formula simplification that was a NOOP. DAG size: 1591 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:37:44,005 WARN L227 SmtUtils]: Spent 8.70s on a formula simplification that was a NOOP. DAG size: 1513 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:38:21,308 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 1494 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:38:52,214 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 1488 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:45:07,456 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 1493 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:45:23,971 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 1492 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:45:40,444 WARN L227 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 1491 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:45:56,959 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 1488 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:46:10,741 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 1475 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:46:39,660 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 1474 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:47:08,690 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 1473 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:47:22,530 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 1472 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:47:36,377 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 1471 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:47:52,946 WARN L227 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 1470 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:48:06,841 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 1469 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)