./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:31:21,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:31:21,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:31:21,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:31:21,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:31:21,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:31:21,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:31:21,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:31:21,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:31:21,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:31:21,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:31:21,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:31:21,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:31:21,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:31:21,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:31:21,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:31:21,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:31:21,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:31:21,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:31:21,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:31:21,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:31:21,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:31:21,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:31:21,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:31:21,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:31:21,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:31:21,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:31:21,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:31:21,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:31:21,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:31:21,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:31:21,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:31:21,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:31:21,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:31:21,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:31:21,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:31:21,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:31:21,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:31:21,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:31:21,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:31:21,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:31:21,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:31:21,986 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:31:21,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:31:21,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:31:21,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:31:21,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:31:21,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:31:21,989 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:31:21,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:31:21,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:31:21,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:31:21,990 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:31:21,991 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:31:21,991 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:31:21,991 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:31:21,991 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:31:21,992 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:31:21,992 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:31:21,992 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:31:21,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:31:21,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:31:21,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:31:21,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:31:21,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:31:21,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:31:21,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:31:21,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:31:21,994 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:31:21,995 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:31:21,995 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:31:21,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:31:21,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:31:21,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:31:21,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:31:21,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:31:21,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:31:21,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:31:21,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:31:21,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:31:21,997 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:31:21,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:31:21,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:31:21,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:31:21,999 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_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 [2021-11-21 01:31:22,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:31:22,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:31:22,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:31:22,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:31:22,305 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:31:22,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2021-11-21 01:31:22,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/data/ea0ede30d/4afc08772a344ad8b01c0d26ca7f4179/FLAGac22b44e3 [2021-11-21 01:31:22,886 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:31:22,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2021-11-21 01:31:22,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/data/ea0ede30d/4afc08772a344ad8b01c0d26ca7f4179/FLAGac22b44e3 [2021-11-21 01:31:23,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/data/ea0ede30d/4afc08772a344ad8b01c0d26ca7f4179 [2021-11-21 01:31:23,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:31:23,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:31:23,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:31:23,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:31:23,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:31:23,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41240035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23, skipping insertion in model container [2021-11-21 01:31:23,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:31:23,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:31:23,683 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_b78f7f68-6ade-453d-bf2d-c04ab0cace03/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2021-11-21 01:31:23,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:31:23,706 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:31:23,752 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_b78f7f68-6ade-453d-bf2d-c04ab0cace03/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2021-11-21 01:31:23,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:31:23,796 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:31:23,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23 WrapperNode [2021-11-21 01:31:23,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:31:23,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:31:23,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:31:23,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:31:23,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,878 INFO L137 Inliner]: procedures = 126, calls = 27, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 114 [2021-11-21 01:31:23,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:31:23,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:31:23,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:31:23,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:31:23,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:31:23,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:31:23,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:31:23,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:31:23,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (1/1) ... [2021-11-21 01:31:23,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:31:23,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:23,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:31:24,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:31:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-21 01:31:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-21 01:31:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:31:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:31:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:31:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:31:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:31:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:31:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:31:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:31:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:31:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:31:24,175 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:31:24,177 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:31:24,226 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-21 01:31:24,467 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:31:24,534 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:31:24,539 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-21 01:31:24,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:31:24 BoogieIcfgContainer [2021-11-21 01:31:24,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:31:24,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:31:24,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:31:24,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:31:24,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:31:23" (1/3) ... [2021-11-21 01:31:24,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae677d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:31:24, skipping insertion in model container [2021-11-21 01:31:24,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:31:23" (2/3) ... [2021-11-21 01:31:24,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae677d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:31:24, skipping insertion in model container [2021-11-21 01:31:24,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:31:24" (3/3) ... [2021-11-21 01:31:24,552 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2021-11-21 01:31:24,557 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:31:24,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2021-11-21 01:31:24,609 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:31:24,617 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:31:24,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2021-11-21 01:31:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 27 states have (on average 2.185185185185185) internal successors, (59), 50 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:31:24,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:24,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:31:24,643 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash 5795537, now seen corresponding path program 1 times [2021-11-21 01:31:24,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:24,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383411422] [2021-11-21 01:31:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:24,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:24,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:24,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383411422] [2021-11-21 01:31:24,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383411422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:24,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:24,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:31:24,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946703321] [2021-11-21 01:31:24,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:24,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:31:24,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:31:24,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:24,851 INFO L87 Difference]: Start difference. First operand has 52 states, 27 states have (on average 2.185185185185185) internal successors, (59), 50 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-21 01:31:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:25,001 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2021-11-21 01:31:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:31:25,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-11-21 01:31:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:25,010 INFO L225 Difference]: With dead ends: 82 [2021-11-21 01:31:25,010 INFO L226 Difference]: Without dead ends: 77 [2021-11-21 01:31:25,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:25,015 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 49 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:25,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 65 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:31:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-21 01:31:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-11-21 01:31:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 2.04) internal successors, (51), 44 states have internal predecessors, (51), 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) [2021-11-21 01:31:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-11-21 01:31:25,051 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 4 [2021-11-21 01:31:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:25,052 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-11-21 01:31:25,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-21 01:31:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-11-21 01:31:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:31:25,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:25,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:31:25,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:31:25,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:25,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash 5795538, now seen corresponding path program 1 times [2021-11-21 01:31:25,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:25,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144717412] [2021-11-21 01:31:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:25,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:25,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:25,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144717412] [2021-11-21 01:31:25,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144717412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:25,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:25,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:31:25,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433331386] [2021-11-21 01:31:25,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:25,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:31:25,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:31:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:25,108 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-21 01:31:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:25,187 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2021-11-21 01:31:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:31:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-11-21 01:31:25,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:25,189 INFO L225 Difference]: With dead ends: 74 [2021-11-21 01:31:25,189 INFO L226 Difference]: Without dead ends: 74 [2021-11-21 01:31:25,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:25,191 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 45 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:25,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 66 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:31:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-21 01:31:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2021-11-21 01:31:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.92) internal successors, (48), 41 states have internal predecessors, (48), 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) [2021-11-21 01:31:25,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-11-21 01:31:25,199 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 4 [2021-11-21 01:31:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:25,199 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-11-21 01:31:25,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-21 01:31:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-11-21 01:31:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:31:25,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:25,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:31:25,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:31:25,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash 184343024, now seen corresponding path program 1 times [2021-11-21 01:31:25,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:25,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136305251] [2021-11-21 01:31:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:25,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:25,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:25,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136305251] [2021-11-21 01:31:25,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136305251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:25,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:25,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:31:25,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333824006] [2021-11-21 01:31:25,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:25,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:31:25,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:31:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:25,271 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-21 01:31:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:25,314 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-21 01:31:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:31:25,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-21 01:31:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:25,316 INFO L225 Difference]: With dead ends: 52 [2021-11-21 01:31:25,316 INFO L226 Difference]: Without dead ends: 52 [2021-11-21 01:31:25,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:25,318 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:25,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 64 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:31:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-21 01:31:25,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2021-11-21 01:31:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-11-21 01:31:25,325 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 5 [2021-11-21 01:31:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:25,325 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-11-21 01:31:25,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-21 01:31:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-11-21 01:31:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:31:25,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:25,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:25,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:31:25,327 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash 770785749, now seen corresponding path program 1 times [2021-11-21 01:31:25,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:25,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524002288] [2021-11-21 01:31:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:25,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:25,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:25,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524002288] [2021-11-21 01:31:25,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524002288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:25,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:25,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:31:25,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559767413] [2021-11-21 01:31:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:25,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:31:25,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:31:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:25,385 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-11-21 01:31:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:25,427 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-11-21 01:31:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:31:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2021-11-21 01:31:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:25,430 INFO L225 Difference]: With dead ends: 49 [2021-11-21 01:31:25,430 INFO L226 Difference]: Without dead ends: 49 [2021-11-21 01:31:25,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:31:25,441 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:25,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:31:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-21 01:31:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-11-21 01:31:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 47 states have internal predecessors, (54), 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) [2021-11-21 01:31:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-11-21 01:31:25,452 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 8 [2021-11-21 01:31:25,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:25,452 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-11-21 01:31:25,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-11-21 01:31:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-11-21 01:31:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:31:25,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:25,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:25,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:31:25,454 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1983908387, now seen corresponding path program 1 times [2021-11-21 01:31:25,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:25,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294710627] [2021-11-21 01:31:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:25,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:25,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294710627] [2021-11-21 01:31:25,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294710627] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:31:25,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142373801] [2021-11-21 01:31:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:25,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:25,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:25,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:25,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:31:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:31:25,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:25,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:25,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142373801] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:25,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [528642498] [2021-11-21 01:31:25,871 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 01:31:25,872 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:31:25,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:31:25,895 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:31:25,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:31:26,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:31:26,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:31:26,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:31:26,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:31:26,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:31:26,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:31:26,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:31:26,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:31:26,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:31:26,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:26,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:31:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:31:27,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:31:27,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:31:27,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:31:27,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:31:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:31:27,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:27,939 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:31:28,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:28,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:28,153 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:31:28,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 360 treesize of output 359 [2021-11-21 01:31:28,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:28,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:28,184 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:28,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 356 treesize of output 337 [2021-11-21 01:31:28,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:28,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:28,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:28,223 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:31:28,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 337 treesize of output 336 [2021-11-21 01:31:29,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-21 01:31:29,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:31:29,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:31:29,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:31:29,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:31:29,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,917 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:31:29,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:29,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:31:30,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:30,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:30,157 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:30,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 360 treesize of output 341 [2021-11-21 01:31:30,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:30,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:30,197 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:31:30,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 341 treesize of output 340 [2021-11-21 01:31:30,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:30,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:30,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:30,236 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:31:30,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 337 treesize of output 336 [2021-11-21 01:31:31,136 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-21 01:31:31,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 396 [2021-11-21 01:31:33,478 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 01:31:33,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 328 treesize of output 319 [2021-11-21 01:31:33,525 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-21 01:31:33,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 313 treesize of output 310 [2021-11-21 01:31:33,566 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 01:31:33,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 309 treesize of output 300 [2021-11-21 01:31:33,981 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:31:35,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [528642498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:35,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:31:35,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 10 [2021-11-21 01:31:35,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530069209] [2021-11-21 01:31:35,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:35,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:31:35,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:31:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:31:35,629 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:36,234 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-11-21 01:31:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:31:36,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:31:36,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:36,235 INFO L225 Difference]: With dead ends: 59 [2021-11-21 01:31:36,235 INFO L226 Difference]: Without dead ends: 59 [2021-11-21 01:31:36,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:31:36,238 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:36,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:31:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-21 01:31:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2021-11-21 01:31:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.631578947368421) internal successors, (62), 54 states have internal predecessors, (62), 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) [2021-11-21 01:31:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-11-21 01:31:36,256 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 12 [2021-11-21 01:31:36,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:36,256 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-11-21 01:31:36,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-11-21 01:31:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:31:36,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:36,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 01:31:36,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 01:31:36,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:36,462 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:36,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1840726210, now seen corresponding path program 1 times [2021-11-21 01:31:36,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:36,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824466162] [2021-11-21 01:31:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:36,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:36,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:36,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:36,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824466162] [2021-11-21 01:31:36,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824466162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:31:36,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483464741] [2021-11-21 01:31:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:36,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:36,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:36,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:36,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:31:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:36,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:31:36,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:36,658 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 6 treesize of output 5 [2021-11-21 01:31:36,698 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:31:36,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:31:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:36,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:36,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483464741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:36,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1096906507] [2021-11-21 01:31:36,909 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-21 01:31:36,909 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:31:36,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:31:36,910 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:31:36,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:31:37,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:31:37,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:31:37,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:31:37,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:31:37,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:31:37,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:31:37,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:31:37,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:31:37,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:31:37,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:31:37,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:37,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:31:38,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:31:38,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:31:38,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:31:38,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:31:38,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:31:38,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,452 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:31:38,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:38,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:38,607 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:31:38,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 352 treesize of output 351 [2021-11-21 01:31:38,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:38,636 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:38,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 348 treesize of output 329 [2021-11-21 01:31:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:38,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:38,664 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:31:38,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 329 treesize of output 328 [2021-11-21 01:31:39,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-21 01:31:39,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:31:39,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:31:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:39,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:31:40,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:31:40,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:31:40,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,261 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:31:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:40,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:40,400 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:31:40,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 352 treesize of output 351 [2021-11-21 01:31:40,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:40,443 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:40,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 348 treesize of output 329 [2021-11-21 01:31:40,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:40,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:40,480 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:31:40,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 329 treesize of output 328 [2021-11-21 01:31:41,578 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-21 01:31:41,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 390 treesize of output 396 [2021-11-21 01:31:43,367 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-21 01:31:43,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 324 treesize of output 321 [2021-11-21 01:31:43,400 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 01:31:43,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 320 treesize of output 311 [2021-11-21 01:31:43,436 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 01:31:43,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 305 treesize of output 296 [2021-11-21 01:31:43,786 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:31:45,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1096906507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:45,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:31:45,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 14 [2021-11-21 01:31:45,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538861296] [2021-11-21 01:31:45,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:45,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:31:45,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:31:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:31:45,595 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2021-11-21 01:31:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:46,182 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-11-21 01:31:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:31:46,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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 15 [2021-11-21 01:31:46,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:46,183 INFO L225 Difference]: With dead ends: 57 [2021-11-21 01:31:46,183 INFO L226 Difference]: Without dead ends: 57 [2021-11-21 01:31:46,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:31:46,184 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:46,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 61 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:31:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-21 01:31:46,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-11-21 01:31:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2021-11-21 01:31:46,190 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 15 [2021-11-21 01:31:46,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:46,190 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2021-11-21 01:31:46,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2021-11-21 01:31:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2021-11-21 01:31:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:31:46,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:46,192 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:46,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:46,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:46,394 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 247919927, now seen corresponding path program 1 times [2021-11-21 01:31:46,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:46,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716426535] [2021-11-21 01:31:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:46,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:31:46,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:46,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716426535] [2021-11-21 01:31:46,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716426535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:46,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:46,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:31:46,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968149345] [2021-11-21 01:31:46,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:46,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:31:46,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:46,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:31:46,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:31:46,490 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-21 01:31:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:46,638 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2021-11-21 01:31:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:31:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 20 [2021-11-21 01:31:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:46,639 INFO L225 Difference]: With dead ends: 97 [2021-11-21 01:31:46,640 INFO L226 Difference]: Without dead ends: 97 [2021-11-21 01:31:46,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:31:46,640 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 160 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:46,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 57 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:31:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-21 01:31:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2021-11-21 01:31:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.619047619047619) internal successors, (68), 57 states have internal predecessors, (68), 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) [2021-11-21 01:31:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2021-11-21 01:31:46,646 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 20 [2021-11-21 01:31:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:46,649 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2021-11-21 01:31:46,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-11-21 01:31:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2021-11-21 01:31:46,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:31:46,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:46,651 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:46,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:31:46,652 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash 247919928, now seen corresponding path program 1 times [2021-11-21 01:31:46,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:46,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317609904] [2021-11-21 01:31:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:46,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:31:46,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:46,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317609904] [2021-11-21 01:31:46,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317609904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:46,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:46,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:31:46,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629510067] [2021-11-21 01:31:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:46,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:31:46,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:31:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:31:46,799 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-11-21 01:31:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:46,938 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2021-11-21 01:31:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:31:46,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2021-11-21 01:31:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:46,939 INFO L225 Difference]: With dead ends: 82 [2021-11-21 01:31:46,939 INFO L226 Difference]: Without dead ends: 82 [2021-11-21 01:31:46,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:31:46,940 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 153 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:46,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 50 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:31:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-21 01:31:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2021-11-21 01:31:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 55 states have internal predecessors, (64), 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) [2021-11-21 01:31:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-11-21 01:31:46,945 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 20 [2021-11-21 01:31:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:46,945 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-11-21 01:31:46,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-11-21 01:31:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-11-21 01:31:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:31:46,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:46,946 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:46,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:31:46,947 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash -900739810, now seen corresponding path program 1 times [2021-11-21 01:31:46,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:46,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851283017] [2021-11-21 01:31:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:46,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:31:46,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851283017] [2021-11-21 01:31:46,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851283017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:46,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:46,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:31:46,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248317900] [2021-11-21 01:31:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:46,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:31:46,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:31:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:31:46,997 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:47,105 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2021-11-21 01:31:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:31:47,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-21 01:31:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:47,106 INFO L225 Difference]: With dead ends: 66 [2021-11-21 01:31:47,106 INFO L226 Difference]: Without dead ends: 66 [2021-11-21 01:31:47,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:31:47,107 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 119 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:47,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 35 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:31:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-21 01:31:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2021-11-21 01:31:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.558139534883721) internal successors, (67), 56 states have internal predecessors, (67), 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) [2021-11-21 01:31:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-11-21 01:31:47,111 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 21 [2021-11-21 01:31:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:47,112 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-11-21 01:31:47,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-11-21 01:31:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 01:31:47,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:47,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:47,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:31:47,113 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash -900739809, now seen corresponding path program 1 times [2021-11-21 01:31:47,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:47,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502218524] [2021-11-21 01:31:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:47,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:31:47,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502218524] [2021-11-21 01:31:47,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502218524] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:31:47,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695187582] [2021-11-21 01:31:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:47,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:47,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:47,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:31:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:47,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:31:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:31:47,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:31:47,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695187582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:47,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:31:47,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2021-11-21 01:31:47,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883866194] [2021-11-21 01:31:47,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:47,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:31:47,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:31:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:31:47,273 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-21 01:31:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:47,299 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2021-11-21 01:31:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:31:47,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 21 [2021-11-21 01:31:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:47,316 INFO L225 Difference]: With dead ends: 58 [2021-11-21 01:31:47,316 INFO L226 Difference]: Without dead ends: 58 [2021-11-21 01:31:47,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:31:47,318 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:47,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 37 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:31:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-21 01:31:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2021-11-21 01:31:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.435897435897436) internal successors, (56), 47 states have internal predecessors, (56), 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) [2021-11-21 01:31:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-11-21 01:31:47,323 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2021-11-21 01:31:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:47,323 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-11-21 01:31:47,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-21 01:31:47,323 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-11-21 01:31:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:31:47,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:47,324 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:47,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:47,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:47,550 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2027944827, now seen corresponding path program 1 times [2021-11-21 01:31:47,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:47,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661289533] [2021-11-21 01:31:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:47,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:31:47,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:47,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661289533] [2021-11-21 01:31:47,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661289533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:31:47,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072414010] [2021-11-21 01:31:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:47,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:47,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:47,636 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:47,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:31:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:47,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:31:47,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:31:47,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:31:47,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072414010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:47,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:31:47,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2021-11-21 01:31:47,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964868837] [2021-11-21 01:31:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:47,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:31:47,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:31:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:31:47,762 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-21 01:31:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:47,797 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-11-21 01:31:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:31:47,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 22 [2021-11-21 01:31:47,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:47,799 INFO L225 Difference]: With dead ends: 45 [2021-11-21 01:31:47,799 INFO L226 Difference]: Without dead ends: 45 [2021-11-21 01:31:47,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:31:47,800 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 64 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:47,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 38 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:31:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-21 01:31:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-21 01:31:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.368421052631579) internal successors, (52), 44 states have internal predecessors, (52), 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) [2021-11-21 01:31:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-11-21 01:31:47,803 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 22 [2021-11-21 01:31:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:47,804 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-11-21 01:31:47,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-21 01:31:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-11-21 01:31:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:31:47,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:47,805 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:47,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:48,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 01:31:48,018 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:31:48,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2027948306, now seen corresponding path program 1 times [2021-11-21 01:31:48,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:48,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607671558] [2021-11-21 01:31:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:48,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:48,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:48,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607671558] [2021-11-21 01:31:48,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607671558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:31:48,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091017830] [2021-11-21 01:31:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:48,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:48,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:48,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:48,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:31:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:48,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-21 01:31:48,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:48,304 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 6 treesize of output 5 [2021-11-21 01:31:48,339 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:48,339 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 11 treesize of output 11 [2021-11-21 01:31:48,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:31:48,386 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:31:48,386 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:31:48,443 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-21 01:31:48,443 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 43 [2021-11-21 01:31:48,647 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-21 01:31:48,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 22 [2021-11-21 01:31:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:48,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:48,756 INFO L354 Elim1Store]: treesize reduction 5, result has 79.2 percent of original size [2021-11-21 01:31:48,757 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 28 treesize of output 27 [2021-11-21 01:32:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:32:06,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091017830] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:32:06,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1466141572] [2021-11-21 01:32:06,992 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 01:32:06,992 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:32:06,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:32:06,993 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:32:06,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:32:07,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:32:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:32:07,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:07,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:07,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:07,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:07,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:07,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:07,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:07,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:07,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:32:08,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:08,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:32:08,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:32:08,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:32:08,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,484 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:08,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:32:08,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:32:08,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:32:08,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,732 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:08,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:08,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:32:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:08,978 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:09,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:09,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:09,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:09,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:32:09,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:09,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:09,807 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 01:32:09,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:32:10,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:10,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:10,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:32:10,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,344 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:10,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-11-21 01:32:10,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:10,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:10,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:10,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:10,773 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:11,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,004 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:11,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:11,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:11,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:32:13,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:32:13,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:32:13,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:13,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:13,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:13,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:13,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:13,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:13,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:13,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:13,533 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:32:13,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:32:13,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:13,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:13,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:13,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:13,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:13,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:32:13,844 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:32:16,065 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:32:16,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:32:16,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 7] total 24 [2021-11-21 01:32:16,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69726439] [2021-11-21 01:32:16,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:32:16,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:32:16,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:32:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1166, Unknown=10, NotChecked=0, Total=1332 [2021-11-21 01:32:16,068 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 25 states, 24 states have (on average 2.375) internal successors, (57), 25 states have internal predecessors, (57), 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) [2021-11-21 01:32:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:24,994 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-11-21 01:32:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:32:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.375) internal successors, (57), 25 states have internal predecessors, (57), 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 22 [2021-11-21 01:32:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:24,995 INFO L225 Difference]: With dead ends: 61 [2021-11-21 01:32:24,995 INFO L226 Difference]: Without dead ends: 61 [2021-11-21 01:32:24,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=250, Invalid=1795, Unknown=25, NotChecked=0, Total=2070 [2021-11-21 01:32:24,996 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 25 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:24,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 118 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 238 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2021-11-21 01:32:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-21 01:32:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2021-11-21 01:32:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 51 states have internal predecessors, (62), 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) [2021-11-21 01:32:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-11-21 01:32:24,999 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 22 [2021-11-21 01:32:24,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-11-21 01:32:25,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.375) internal successors, (57), 25 states have internal predecessors, (57), 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) [2021-11-21 01:32:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-11-21 01:32:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:32:25,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:25,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:32:25,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-21 01:32:25,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 01:32:25,218 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:32:25,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2027948307, now seen corresponding path program 1 times [2021-11-21 01:32:25,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:25,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578045745] [2021-11-21 01:32:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:25,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:25,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:32:25,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:25,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578045745] [2021-11-21 01:32:25,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578045745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:32:25,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434366690] [2021-11-21 01:32:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:25,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:32:25,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:32:25,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:32:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:25,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-21 01:32:25,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:32:25,523 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 6 treesize of output 5 [2021-11-21 01:32:25,587 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:32:25,587 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 11 treesize of output 11 [2021-11-21 01:32:25,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:25,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:25,661 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:32:25,662 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:25,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:25,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:25,736 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-21 01:32:25,738 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 94 [2021-11-21 01:32:25,757 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-11-21 01:32:25,758 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 90 [2021-11-21 01:32:26,002 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2021-11-21 01:32:26,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 72 [2021-11-21 01:32:26,009 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-21 01:32:26,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 29 [2021-11-21 01:32:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:32:26,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:32:26,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:32:26,196 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 67 treesize of output 71 [2021-11-21 01:32:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:32:26,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434366690] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:32:26,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2071783355] [2021-11-21 01:32:26,549 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 01:32:26,549 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:32:26,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:32:26,550 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:32:26,550 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:32:26,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:26,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:26,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:32:26,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:26,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:32:26,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:26,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:26,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:26,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:26,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:26,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:26,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:26,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:26,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:27,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:27,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:27,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:32:27,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:27,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:27,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:27,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:27,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,875 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:27,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:27,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:28,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:28,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,086 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:28,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:28,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,465 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:28,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:28,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:29,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:32:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:32:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:29,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:29,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:32:29,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:29,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:30,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,046 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:30,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,170 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:30,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:30,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,599 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:30,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:30,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:30,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:32:32,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:32:32,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:32:32,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:32,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:32,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:33,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:33,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:33,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:33,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:33,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:33,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:33,091 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:32:33,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:32:33,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:33,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:32:33,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:33,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:33,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:33,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:33,342 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:32:35,613 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:32:35,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:32:35,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 30 [2021-11-21 01:32:35,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740027103] [2021-11-21 01:32:35,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:32:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-21 01:32:35,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-21 01:32:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1590, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 01:32:35,616 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 31 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 31 states have internal predecessors, (64), 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) [2021-11-21 01:32:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:38,516 INFO L93 Difference]: Finished difference Result 148 states and 160 transitions. [2021-11-21 01:32:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 01:32:38,517 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 31 states have internal predecessors, (64), 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 22 [2021-11-21 01:32:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:38,518 INFO L225 Difference]: With dead ends: 148 [2021-11-21 01:32:38,518 INFO L226 Difference]: Without dead ends: 148 [2021-11-21 01:32:38,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=790, Invalid=4040, Unknown=0, NotChecked=0, Total=4830 [2021-11-21 01:32:38,520 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 959 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:38,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 161 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 641 Invalid, 0 Unknown, 20 Unchecked, 0.6s Time] [2021-11-21 01:32:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-21 01:32:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 50. [2021-11-21 01:32:38,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 49 states have internal predecessors, (59), 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) [2021-11-21 01:32:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-11-21 01:32:38,524 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 22 [2021-11-21 01:32:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:38,524 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-11-21 01:32:38,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 31 states have internal predecessors, (64), 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) [2021-11-21 01:32:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-11-21 01:32:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:32:38,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:38,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:32:38,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:32:38,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:38,738 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:32:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2146006273, now seen corresponding path program 1 times [2021-11-21 01:32:38,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:38,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958469417] [2021-11-21 01:32:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:38,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:32:38,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:38,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958469417] [2021-11-21 01:32:38,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958469417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:32:38,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151640296] [2021-11-21 01:32:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:38,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:38,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:32:38,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:32:38,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:32:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:38,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:32:38,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:32:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:32:38,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:32:38,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151640296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:32:38,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:32:38,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-21 01:32:38,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106705182] [2021-11-21 01:32:38,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:32:38,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:32:38,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:38,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:32:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:32:38,905 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-21 01:32:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:38,943 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-11-21 01:32:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:32:38,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 24 [2021-11-21 01:32:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:38,944 INFO L225 Difference]: With dead ends: 56 [2021-11-21 01:32:38,944 INFO L226 Difference]: Without dead ends: 56 [2021-11-21 01:32:38,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:32:38,945 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:38,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 51 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:32:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-21 01:32:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-11-21 01:32:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 50 states have internal predecessors, (59), 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) [2021-11-21 01:32:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-11-21 01:32:38,948 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 24 [2021-11-21 01:32:38,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:38,948 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-11-21 01:32:38,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-11-21 01:32:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-11-21 01:32:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:32:38,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:38,949 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:32:38,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:32:39,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 01:32:39,159 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:32:39,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1915897531, now seen corresponding path program 1 times [2021-11-21 01:32:39,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:39,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695175365] [2021-11-21 01:32:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:39,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:32:39,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:39,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695175365] [2021-11-21 01:32:39,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695175365] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:32:39,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339231847] [2021-11-21 01:32:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:39,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:39,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:32:39,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:32:39,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:32:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:39,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:32:39,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:32:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 01:32:39,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:32:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 01:32:39,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339231847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:32:39,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [143680503] [2021-11-21 01:32:39,404 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-21 01:32:39,404 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:32:39,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:32:39,405 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:32:39,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:32:39,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:32:39,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:39,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:39,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:32:39,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:39,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:39,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:39,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:39,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:39,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:40,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:32:40,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:40,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:40,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:40,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,593 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:40,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:40,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:40,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:40,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,896 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:40,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:41,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:41,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,164 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:41,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:41,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:41,936 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 01:32:41,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:32:42,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:42,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:32:42,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:42,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:32:42,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:42,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,555 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:42,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,604 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:42,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:42,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:42,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:43,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:32:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:43,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,176 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:44,560 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:32:44,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:32:44,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:44,737 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:32:44,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:32:45,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:45,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:45,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:46,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:46,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:46,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:46,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:46,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:46,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:47,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:32:47,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:32:47,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:47,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:47,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:48,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:48,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:48,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:48,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:48,089 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:32:48,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:32:48,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:48,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:48,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:48,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:48,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:48,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:48,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:48,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:32:48,370 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:32:50,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:32:50,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:32:50,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2021-11-21 01:32:50,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804984122] [2021-11-21 01:32:50,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:32:50,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:32:50,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:32:50,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:32:50,289 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-11-21 01:32:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:32:50,332 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-11-21 01:32:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:32:50,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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 26 [2021-11-21 01:32:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:32:50,333 INFO L225 Difference]: With dead ends: 58 [2021-11-21 01:32:50,333 INFO L226 Difference]: Without dead ends: 58 [2021-11-21 01:32:50,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:32:50,335 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:32:50,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 47 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:32:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-21 01:32:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-11-21 01:32:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.3) internal successors, (65), 55 states have internal predecessors, (65), 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) [2021-11-21 01:32:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2021-11-21 01:32:50,338 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 26 [2021-11-21 01:32:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:32:50,338 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2021-11-21 01:32:50,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-11-21 01:32:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2021-11-21 01:32:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 01:32:50,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:50,339 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:32:50,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:32:50,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 01:32:50,553 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:32:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash 622829996, now seen corresponding path program 1 times [2021-11-21 01:32:50,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326231448] [2021-11-21 01:32:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:50,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:32:50,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:50,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326231448] [2021-11-21 01:32:50,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326231448] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:32:50,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647461721] [2021-11-21 01:32:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:50,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:50,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:32:50,638 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:32:50,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:32:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:50,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:32:50,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:32:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 01:32:50,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:32:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-21 01:32:50,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647461721] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:32:50,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1434206794] [2021-11-21 01:32:50,837 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 01:32:50,837 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:32:50,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:32:50,838 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:32:50,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:32:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:50,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:50,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:32:51,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:51,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:32:51,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:51,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:51,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:51,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:51,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:32:51,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:51,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:51,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:51,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:32:52,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:52,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:32:52,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:32:52,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:32:52,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,271 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:52,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:32:52,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:32:52,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:32:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,496 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:52,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,697 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:52,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:52,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:32:52,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:52,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:52,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:32:53,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,449 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 01:32:53,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:32:53,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:32:53,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:32:53,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:53,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:32:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:32:54,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,102 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:54,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:32:54,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,215 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:54,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:54,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:32:54,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:32:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,710 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:32:54,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:54,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:32:56,254 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:32:56,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:32:56,319 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:32:56,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:32:56,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:57,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:57,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:57,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:57,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:57,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:57,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:58,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:58,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:58,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:58,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:32:58,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:32:58,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:32:58,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:58,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:32:59,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:59,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:59,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:59,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:59,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:59,148 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:32:59,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:32:59,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:32:59,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:59,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:59,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:59,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:59,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:59,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:32:59,471 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:33:01,095 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:33:01,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:33:01,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2021-11-21 01:33:01,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513924427] [2021-11-21 01:33:01,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:33:01,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:33:01,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:01,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:33:01,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:33:01,097 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-21 01:33:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:01,149 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-11-21 01:33:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:33:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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 27 [2021-11-21 01:33:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:01,150 INFO L225 Difference]: With dead ends: 54 [2021-11-21 01:33:01,150 INFO L226 Difference]: Without dead ends: 54 [2021-11-21 01:33:01,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:33:01,151 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 45 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:01,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 61 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:33:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-21 01:33:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-11-21 01:33:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 52 states have internal predecessors, (60), 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) [2021-11-21 01:33:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2021-11-21 01:33:01,154 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 27 [2021-11-21 01:33:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:01,155 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2021-11-21 01:33:01,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-21 01:33:01,155 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2021-11-21 01:33:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 01:33:01,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:01,156 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:01,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:01,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 01:33:01,370 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:33:01,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:01,370 INFO L85 PathProgramCache]: Analyzing trace with hash 86652823, now seen corresponding path program 2 times [2021-11-21 01:33:01,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070791551] [2021-11-21 01:33:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:01,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:33:01,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:01,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070791551] [2021-11-21 01:33:01,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070791551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:33:01,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282920041] [2021-11-21 01:33:01,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:33:01,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:33:01,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:01,407 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:33:01,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:33:01,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:33:01,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:33:01,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-21 01:33:01,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:01,560 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:33:01,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-21 01:33:01,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:33:01,631 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:33:01,631 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 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:33:01,805 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:33:01,805 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 24 [2021-11-21 01:33:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:33:01,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:33:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:33:02,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282920041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:33:02,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808683838] [2021-11-21 01:33:02,087 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 01:33:02,087 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:33:02,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:33:02,088 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:33:02,088 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:33:02,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:33:02,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:33:02,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:33:02,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:33:02,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:33:02,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:33:02,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:33:02,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:33:02,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:33:02,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:33:02,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:02,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:33:03,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:33:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:33:03,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:33:03,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:33:03,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,379 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:33:03,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:33:03,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:33:03,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:33:03,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,592 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:33:03,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:03,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:33:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,855 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:33:03,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:03,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:03,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:33:04,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:33:04,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:33:04,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:33:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:04,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:33:05,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:33:05,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:33:05,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,116 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:33:05,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,244 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:33:05,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:33:05,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:33:05,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:33:05,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,825 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:33:05,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:05,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:33:08,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:33:08,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:33:08,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:33:08,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:33:08,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:33:08,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:33:08,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:08,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:08,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:08,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:08,325 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:33:08,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:33:08,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:33:08,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:08,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:33:08,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:08,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:33:08,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:08,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:33:08,637 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:33:10,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:33:10,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:33:10,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 9] total 22 [2021-11-21 01:33:10,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077803792] [2021-11-21 01:33:10,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:33:10,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-21 01:33:10,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-21 01:33:10,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:33:10,697 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 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) [2021-11-21 01:33:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:11,080 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2021-11-21 01:33:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:33:11,081 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 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 29 [2021-11-21 01:33:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:11,081 INFO L225 Difference]: With dead ends: 53 [2021-11-21 01:33:11,081 INFO L226 Difference]: Without dead ends: 53 [2021-11-21 01:33:11,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=343, Invalid=1637, Unknown=0, NotChecked=0, Total=1980 [2021-11-21 01:33:11,083 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 166 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:11,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 92 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 270 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2021-11-21 01:33:11,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-21 01:33:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2021-11-21 01:33:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 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) [2021-11-21 01:33:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-11-21 01:33:11,085 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 29 [2021-11-21 01:33:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:11,085 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-11-21 01:33:11,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 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) [2021-11-21 01:33:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-11-21 01:33:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 01:33:11,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:11,086 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:11,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:11,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-21 01:33:11,287 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:33:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash 447041307, now seen corresponding path program 2 times [2021-11-21 01:33:11,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:11,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182385129] [2021-11-21 01:33:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:11,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 01:33:11,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:11,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182385129] [2021-11-21 01:33:11,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182385129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:11,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:11,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:33:11,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118953182] [2021-11-21 01:33:11,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:11,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:33:11,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:33:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:33:11,384 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2021-11-21 01:33:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:11,488 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-11-21 01:33:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:33:11,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 29 [2021-11-21 01:33:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:11,489 INFO L225 Difference]: With dead ends: 46 [2021-11-21 01:33:11,489 INFO L226 Difference]: Without dead ends: 46 [2021-11-21 01:33:11,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:33:11,490 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 85 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:11,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 10 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:33:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-21 01:33:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-11-21 01:33:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 40 states have internal predecessors, (44), 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) [2021-11-21 01:33:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-11-21 01:33:11,494 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 29 [2021-11-21 01:33:11,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:11,494 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-11-21 01:33:11,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2021-11-21 01:33:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-11-21 01:33:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 01:33:11,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:11,495 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:11,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 01:33:11,495 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:33:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash 447042594, now seen corresponding path program 1 times [2021-11-21 01:33:11,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:11,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986726210] [2021-11-21 01:33:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:11,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 01:33:11,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:11,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986726210] [2021-11-21 01:33:11,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986726210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:11,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:11,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:33:11,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773908907] [2021-11-21 01:33:11,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:11,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:33:11,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:33:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:33:11,548 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2021-11-21 01:33:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:11,615 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-11-21 01:33:11,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:33:11,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 29 [2021-11-21 01:33:11,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:11,616 INFO L225 Difference]: With dead ends: 44 [2021-11-21 01:33:11,616 INFO L226 Difference]: Without dead ends: 44 [2021-11-21 01:33:11,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:33:11,617 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 79 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:11,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 20 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:33:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-21 01:33:11,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-11-21 01:33:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 40 states have internal predecessors, (43), 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) [2021-11-21 01:33:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-21 01:33:11,618 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 29 [2021-11-21 01:33:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:11,618 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-21 01:33:11,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2021-11-21 01:33:11,619 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-21 01:33:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 01:33:11,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:11,619 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:11,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 01:33:11,620 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:33:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash 109991057, now seen corresponding path program 1 times [2021-11-21 01:33:11,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:11,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357236840] [2021-11-21 01:33:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:11,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-21 01:33:11,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:11,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357236840] [2021-11-21 01:33:11,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357236840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:11,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:11,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:33:11,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182724751] [2021-11-21 01:33:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:11,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:33:11,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:33:11,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:33:11,671 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-11-21 01:33:11,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:11,741 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-11-21 01:33:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:33:11,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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 31 [2021-11-21 01:33:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:11,742 INFO L225 Difference]: With dead ends: 42 [2021-11-21 01:33:11,742 INFO L226 Difference]: Without dead ends: 42 [2021-11-21 01:33:11,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:33:11,743 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 69 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:11,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 10 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:33:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-21 01:33:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-21 01:33:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 41 states have internal predecessors, (44), 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) [2021-11-21 01:33:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-11-21 01:33:11,745 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2021-11-21 01:33:11,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:11,746 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-11-21 01:33:11,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-11-21 01:33:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-11-21 01:33:11,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:33:11,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:11,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:11,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 01:33:11,747 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:33:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash -316296289, now seen corresponding path program 1 times [2021-11-21 01:33:11,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:11,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619628585] [2021-11-21 01:33:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:11,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:33:12,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:12,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619628585] [2021-11-21 01:33:12,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619628585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:33:12,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458550081] [2021-11-21 01:33:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:12,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:33:12,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:12,038 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:33:12,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 01:33:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:12,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-21 01:33:12,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:12,110 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 6 treesize of output 5 [2021-11-21 01:33:12,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:33:12,143 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 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:33:12,182 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 13 treesize of output 9 [2021-11-21 01:33:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:12,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:33:12,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:12,274 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 01:33:12,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 38 [2021-11-21 01:33:12,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:12,561 INFO L354 Elim1Store]: treesize reduction 120, result has 21.1 percent of original size [2021-11-21 01:33:12,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 73 treesize of output 64 [2021-11-21 01:33:12,670 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-21 01:33:12,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 30 [2021-11-21 01:33:12,760 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:12,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-11-21 01:33:12,869 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:33:12,869 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 20 treesize of output 22 [2021-11-21 01:33:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:12,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:33:13,592 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int) (v_DerPreprocessor_1 Int)) (or (= (select (store |c_#valid| |c_ULTIMATE.start_main_~s~0#1.base| 0) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)) 1) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) is different from false [2021-11-21 01:33:13,615 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:13,616 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 50 treesize of output 54 [2021-11-21 01:33:15,688 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_update_at_~head#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_dll_update_at_~head#1.base|)) (forall ((|ULTIMATE.start_dll_update_at_~head#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_main_~s~0#1.base|)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) is different from false [2021-11-21 01:33:17,737 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) .cse0))) (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_main_~s~0#1.base|)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) is different from false [2021-11-21 01:33:19,799 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|) (and (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_main_~s~0#1.base|))) (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (= .cse1 (select (store (select (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4))))))) is different from false [2021-11-21 01:33:21,824 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))) (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) .cse1)))) (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) is different from false [2021-11-21 01:33:23,850 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|) (and (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))) (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse1 (select (store (select (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4))))))) is different from false [2021-11-21 01:33:25,885 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) v_subst_1 v_DerPreprocessor_2)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse2 (select (store (select (store .cse3 .cse2 (store (select .cse3 .cse2) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) is different from false [2021-11-21 01:33:27,962 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) v_subst_1 v_DerPreprocessor_2)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))) (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse3 (select (store (select (store .cse4 .cse3 (store (select .cse4 .cse3) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) is different from false [2021-11-21 01:33:28,591 INFO L354 Elim1Store]: treesize reduction 944, result has 29.9 percent of original size [2021-11-21 01:33:28,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 1340 treesize of output 898 [2021-11-21 01:33:28,622 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:28,623 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 898 treesize of output 892 [2021-11-21 01:33:28,660 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:28,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 892 treesize of output 904 [2021-11-21 01:33:28,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:28,695 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 904 treesize of output 900 [2021-11-21 01:33:28,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:28,731 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 900 treesize of output 894 [2021-11-21 01:33:28,764 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:28,765 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 894 treesize of output 890 [2021-11-21 01:33:28,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:28,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 890 treesize of output 902 [2021-11-21 01:33:29,004 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 8 treesize of output 4 [2021-11-21 01:33:29,055 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 8 treesize of output 4 [2021-11-21 01:33:29,120 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:29,121 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 24 treesize of output 28 [2021-11-21 01:33:29,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:29,246 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 17 treesize of output 21 [2021-11-21 01:33:29,351 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 8 treesize of output 6 [2021-11-21 01:33:29,460 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 8 treesize of output 4 [2021-11-21 01:33:29,684 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 8 treesize of output 4 [2021-11-21 01:33:29,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:29,866 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:29,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 670 treesize of output 744 [2021-11-21 01:33:57,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:57,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:57,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 29 treesize of output 41 [2021-11-21 01:33:57,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:57,435 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 17 treesize of output 9 [2021-11-21 01:33:57,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:57,540 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 17 treesize of output 9 [2021-11-21 01:33:57,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:57,695 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 17 treesize of output 9 [2021-11-21 01:33:58,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:58,224 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 17 treesize of output 9 [2021-11-21 01:33:58,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:58,372 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 17 treesize of output 9 [2021-11-21 01:33:58,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:58,467 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-11-21 01:33:58,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 treesize of output 16 [2021-11-21 01:33:58,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:58,522 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 17 treesize of output 9 [2021-11-21 01:33:58,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:33:58,851 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:33:58,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 1378 treesize of output 1398 [2021-11-21 01:34:05,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:34:05,932 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:34:05,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 1600 treesize of output 1562 [2021-11-21 01:34:11,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:34:11,685 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:34:11,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 438 treesize of output 478 [2021-11-21 01:34:13,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:34:13,625 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:34:13,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 149 treesize of output 141 [2021-11-21 01:34:13,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:34:13,800 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:34:13,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 39 treesize of output 51 [2021-11-21 01:34:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-21 01:34:13,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458550081] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:34:13,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1925719244] [2021-11-21 01:34:13,994 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:34:13,995 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:34:13,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:34:13,995 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:34:13,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:34:14,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:34:14,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:14,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:34:14,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:14,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:34:14,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:34:14,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:34:14,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:34:14,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:34:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:34:14,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:14,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:34:15,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:34:15,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:34:15,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:34:15,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:34:15,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,358 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:34:15,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:34:15,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,468 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:34:15,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:34:15,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:34:15,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:34:15,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:15,956 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:34:16,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:34:16,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:16,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:34:17,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:34:17,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:34:17,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:34:17,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,437 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:34:17,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:34:17,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:34:17,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:34:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:34:17,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:17,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:34:18,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:34:18,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:34:18,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:18,265 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:34:19,862 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:34:19,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:34:19,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:34:20,030 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:34:20,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:34:20,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:34:20,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:20,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:21,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:34:21,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:21,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:22,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:22,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:34:22,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:23,932 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-21 01:34:23,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:34:25,162 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:34:25,906 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:34:27,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:34:27,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:34:27,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:27,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:34:27,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:34:27,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:27,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:27,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:27,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:34:27,778 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:34:27,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:34:27,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:34:27,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:34:28,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:28,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:34:28,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:28,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:34:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:28,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:34:28,212 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:34:31,769 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:34:31,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:34:31,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 47 [2021-11-21 01:34:31,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956561042] [2021-11-21 01:34:31,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:34:31,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-21 01:34:31,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-21 01:34:31,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3071, Unknown=8, NotChecked=952, Total=4290 [2021-11-21 01:34:31,772 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 48 states have internal predecessors, (96), 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) [2021-11-21 01:34:33,847 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) v_subst_1 v_DerPreprocessor_2)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))) (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse3 (select (store (select (store .cse4 .cse3 (store (select .cse4 .cse3) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (or (not (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 0)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| 0)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0))) is different from false [2021-11-21 01:34:35,856 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse1 .cse2 (store (select .cse1 .cse2) v_subst_1 v_DerPreprocessor_2)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse3 (select (store (select (store .cse4 .cse3 (store (select .cse4 .cse3) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0)) (= (select .cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0))) is different from false [2021-11-21 01:34:37,944 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse0) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse1 .cse2 (store (select .cse1 .cse2) v_subst_1 v_DerPreprocessor_2)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))) (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse4 (select (store (select (store .cse5 .cse4 (store (select .cse5 .cse4) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) 1) (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0)) (= (select |c_#valid| .cse0) 1))) is different from false [2021-11-21 01:34:39,949 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select .cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse1 .cse2 (store (select .cse1 .cse2) v_subst_1 v_DerPreprocessor_2)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (forall ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse3 (select (store (select (store .cse4 .cse3 (store (select .cse4 .cse3) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0)) (= (select .cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0))) is different from false [2021-11-21 01:34:41,953 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (and (= |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 0) (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (exists ((|ULTIMATE.start_dll_create_~head~0#1.offset| Int)) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| 0)) (= (select .cse1 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8)) 0) (= (select |c_#valid| .cse0) 1) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|) (and (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (select (store (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))) (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (= .cse3 (select (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))))))))) is different from false [2021-11-21 01:34:43,957 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse0 (select .cse1 4))) (and (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| 0)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse0)) (exists ((|v_ULTIMATE.start_dll_create_~head~0#1.offset_49| Int)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) 4)) (+ |v_ULTIMATE.start_dll_create_~head~0#1.offset_49| 8)))) (= (select |c_#valid| .cse0) 1) (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select .cse1 8) 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)))) (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) .cse3)))) (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|)))))) is different from false [2021-11-21 01:34:45,961 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse3 4))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| .cse0)) (exists ((|v_ULTIMATE.start_dll_create_~head~0#1.offset_49| Int)) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) 4)) (+ |v_ULTIMATE.start_dll_create_~head~0#1.offset_49| 8)) |c_ULTIMATE.start_main_~s~0#1.base|)) (= (select |c_#valid| .cse0) 1) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|) (and (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_main_~s~0#1.base|))) (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (= .cse2 (select (store (select (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4))))))) (= (select .cse3 8) 0) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0)))) is different from false [2021-11-21 01:34:47,966 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4))) (.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select .cse0 4))) (= |c_ULTIMATE.start_main_~s~0#1.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((v_subst_2 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (= (select (store (select (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_2 v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) .cse1))) (forall ((v_subst_1 Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) v_subst_1 v_DerPreprocessor_2))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_main_~s~0#1.base|)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) (exists ((|v_ULTIMATE.start_dll_create_~head~0#1.offset_49| Int)) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) 4)) (+ |v_ULTIMATE.start_dll_create_~head~0#1.offset_49| 8)) |c_ULTIMATE.start_main_~s~0#1.base|)) (= (select |c_#valid| .cse3) 1) (= |c_ULTIMATE.start_dll_update_at_~head#1.offset| 0) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (not (= .cse3 |c_ULTIMATE.start_main_~s~0#1.base|)) (= (select .cse0 8) 0) (= |c_ULTIMATE.start_main_~s~0#1.offset| |c_ULTIMATE.start_dll_update_at_~head#1.offset|) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0))) is different from false [2021-11-21 01:34:49,974 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse1 4))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|)) (not (= |c_ULTIMATE.start_main_~s~0#1.base| .cse0)) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int)) (or (and (forall ((|ULTIMATE.start_dll_update_at_~head#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_dll_update_at_~head#1.base|)) (forall ((|ULTIMATE.start_dll_update_at_~head#1.offset| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_2)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4) |c_ULTIMATE.start_main_~s~0#1.base|)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) (exists ((|v_ULTIMATE.start_dll_create_~head~0#1.offset_49| Int)) (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) 4)) (+ |v_ULTIMATE.start_dll_create_~head~0#1.offset_49| 8)) |c_ULTIMATE.start_main_~s~0#1.base|)) (= (select |c_#valid| .cse0) 1) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (= (select .cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) |c_ULTIMATE.start_dll_update_at_~head#1.base|) (= (select .cse1 8) 0) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0)))) is different from false [2021-11-21 01:34:50,495 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (and (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_53| Int) (v_DerPreprocessor_1 Int)) (or (= (select (store |c_#valid| |c_ULTIMATE.start_main_~s~0#1.base| 0) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_53| v_DerPreprocessor_1) 4)) 1) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_53|))) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (not (= .cse0 |c_ULTIMATE.start_main_~s~0#1.base|)) (= (select .cse1 8) 0) (= 1 (select |c_#valid| .cse0)) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0)))) is different from false [2021-11-21 01:34:50,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:50,993 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2021-11-21 01:34:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-21 01:34:50,994 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 48 states have internal predecessors, (96), 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 34 [2021-11-21 01:34:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:50,994 INFO L225 Difference]: With dead ends: 81 [2021-11-21 01:34:50,995 INFO L226 Difference]: Without dead ends: 81 [2021-11-21 01:34:50,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=383, Invalid=4227, Unknown=18, NotChecked=2682, Total=7310 [2021-11-21 01:34:50,997 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 134 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 539 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:50,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 245 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 532 Invalid, 0 Unknown, 539 Unchecked, 0.3s Time] [2021-11-21 01:34:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-21 01:34:50,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2021-11-21 01:34:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 66 states have internal predecessors, (73), 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) [2021-11-21 01:34:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2021-11-21 01:34:51,000 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 34 [2021-11-21 01:34:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:51,000 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2021-11-21 01:34:51,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 48 states have internal predecessors, (96), 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) [2021-11-21 01:34:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2021-11-21 01:34:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:34:51,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:51,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:51,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:34:51,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:34:51,214 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:34:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:51,215 INFO L85 PathProgramCache]: Analyzing trace with hash -316296288, now seen corresponding path program 1 times [2021-11-21 01:34:51,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:51,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041901232] [2021-11-21 01:34:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:51,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:34:51,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:51,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041901232] [2021-11-21 01:34:51,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041901232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:34:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466489665] [2021-11-21 01:34:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:51,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:34:51,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:34:51,643 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:34:51,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 01:34:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:51,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-21 01:34:51,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:34:51,720 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 6 treesize of output 5 [2021-11-21 01:34:51,804 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:34:51,804 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 11 treesize of output 11 [2021-11-21 01:34:51,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:34:51,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:34:51,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:51,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:34:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:51,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:34:51,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:51,988 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-21 01:34:51,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 94 [2021-11-21 01:34:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:34:52,004 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-21 01:34:52,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 90 [2021-11-21 01:34:52,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:34:52,393 INFO L354 Elim1Store]: treesize reduction 191, result has 17.7 percent of original size [2021-11-21 01:34:52,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 145 treesize of output 121 [2021-11-21 01:34:52,418 INFO L354 Elim1Store]: treesize reduction 136, result has 18.1 percent of original size [2021-11-21 01:34:52,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 89 [2021-11-21 01:34:52,578 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-21 01:34:52,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 65 [2021-11-21 01:34:52,593 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-21 01:34:52,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 50 [2021-11-21 01:34:52,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:34:52,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 65 [2021-11-21 01:34:52,721 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:34:52,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 61 [2021-11-21 01:34:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:34:52,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:34:54,094 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (and (forall ((v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (<= (+ (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) 8) (select |c_#length| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4)))) (forall ((v_DerPreprocessor_4 Int)) (<= 0 (+ (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) 4)))))) is different from false [2021-11-21 01:34:56,131 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (and (forall ((|ULTIMATE.start_dll_update_at_~head#1.offset| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (<= (+ 8 (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_6)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4)) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_5)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4)))) (forall ((|ULTIMATE.start_dll_update_at_~head#1.offset| Int) (v_DerPreprocessor_6 Int) (v_prenex_40 Int)) (<= 0 (+ (select (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_6)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_prenex_40) 4) 4)))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|))) is different from false [2021-11-21 01:34:58,201 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (and (forall ((v_DerPreprocessor_6 Int) (v_prenex_40 Int) (v_subst_4 Int)) (<= 0 (+ (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) v_subst_4 v_DerPreprocessor_6))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_prenex_40) 4) 4))) (forall ((v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_subst_3 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (<= (+ (select (store (select (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) v_subst_3 v_DerPreprocessor_6)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) 8) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_3 v_DerPreprocessor_5)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4)))))))) is different from false [2021-11-21 01:35:00,275 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (and (forall ((v_DerPreprocessor_6 Int) (v_prenex_40 Int) (v_subst_4 Int)) (<= 0 (+ (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) v_subst_4 v_DerPreprocessor_6))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_prenex_40) 4) 4))) (forall ((v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_subst_3 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (<= (+ (select (store (select (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) v_subst_3 v_DerPreprocessor_6)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) 8) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_3 v_DerPreprocessor_5)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4)))))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|))) is different from false [2021-11-21 01:36:20,455 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (and (forall ((v_DerPreprocessor_6 Int) (v_prenex_40 Int) (v_subst_4 Int)) (<= 0 (+ (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) v_subst_4 v_DerPreprocessor_6))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_prenex_40) 4) 4))) (forall ((v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_subst_3 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (<= (+ (select (store (select (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) v_subst_3 v_DerPreprocessor_6)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) 8) (select |c_#length| (select (store (select (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) v_subst_3 v_DerPreprocessor_5)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4)))))))) is different from false [2021-11-21 01:36:20,472 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:20,472 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 225 treesize of output 229 [2021-11-21 01:36:22,579 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (and (forall ((v_DerPreprocessor_5 Int) (v_subst_3 Int) (v_DerPreprocessor_3 Int)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) v_subst_3 v_DerPreprocessor_5)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4))) (forall ((v_DerPreprocessor_6 Int) (v_prenex_40 Int) (v_subst_4 Int)) (<= 0 (+ (select (store (select (let ((.cse4 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (.cse3 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse2 .cse3 (store (select .cse2 .cse3) v_subst_4 v_DerPreprocessor_6)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_prenex_40) 4) 4))) (forall ((v_prenex_41 Int) (v_subst_3 Int) (v_DerPreprocessor_4 Int)) (<= (select (store (select (let ((.cse7 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) (.cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse5 .cse6 (store (select .cse5 .cse6) v_subst_3 v_prenex_41)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|))) is different from false [2021-11-21 01:36:24,668 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (and (forall ((v_prenex_41 Int) (v_subst_3 Int) (v_DerPreprocessor_4 Int)) (<= (select (store (select (let ((.cse3 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse4 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse0 (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse4 0)))) (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (.cse1 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse4 0)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) v_subst_3 v_prenex_41)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4))) (forall ((v_DerPreprocessor_6 Int) (v_prenex_40 Int) (v_subst_4 Int)) (<= 0 (+ (select (store (select (let ((.cse9 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse10 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse6 (let ((.cse11 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse10 0)))) (store .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse11 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (.cse7 (select (select (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse10 0)))) (store .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse6 .cse7 (store (select .cse6 .cse7) v_subst_4 v_DerPreprocessor_6)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_prenex_40) 4) 4))) (forall ((v_DerPreprocessor_5 Int) (v_subst_3 Int) (v_DerPreprocessor_3 Int)) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| (select (store (select (let ((.cse12 (let ((.cse14 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse12 .cse13 (store (select .cse12 .cse13) v_subst_3 v_DerPreprocessor_5)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4)))) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|))) is different from false [2021-11-21 01:36:24,991 INFO L354 Elim1Store]: treesize reduction 1008, result has 31.1 percent of original size [2021-11-21 01:36:24,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 579 treesize of output 673 [2021-11-21 01:36:25,202 INFO L354 Elim1Store]: treesize reduction 472, result has 30.0 percent of original size [2021-11-21 01:36:25,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 1851 treesize of output 1630 [2021-11-21 01:36:25,269 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:25,269 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 868 treesize of output 866 [2021-11-21 01:36:25,314 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:25,315 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 770 treesize of output 766 [2021-11-21 01:36:25,347 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:25,348 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 766 treesize of output 758 [2021-11-21 01:36:25,381 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:25,382 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 758 treesize of output 750 [2021-11-21 01:36:25,482 INFO L354 Elim1Store]: treesize reduction 31, result has 62.2 percent of original size [2021-11-21 01:36:25,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 750 treesize of output 778 [2021-11-21 01:36:54,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:54,983 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:54,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 132 treesize of output 142 [2021-11-21 01:36:56,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:56,047 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:56,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 330 treesize of output 358 [2021-11-21 01:37:06,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:06,291 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:06,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 2573 treesize of output 2483 [2021-11-21 01:37:10,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:10,738 INFO L354 Elim1Store]: treesize reduction 7, result has 66.7 percent of original size [2021-11-21 01:37:10,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 34 treesize of output 37 [2021-11-21 01:37:10,804 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-21 01:37:10,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:10,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:10,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:10,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2021-11-21 01:37:10,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:10,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:10,917 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-21 01:37:10,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 1 [2021-11-21 01:37:10,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:10,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:10,964 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-21 01:37:10,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 1 [2021-11-21 01:37:11,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,012 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-21 01:37:11,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 1 [2021-11-21 01:37:11,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:11,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2021-11-21 01:37:11,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:11,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2021-11-21 01:37:11,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,186 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-21 01:37:11,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 1 [2021-11-21 01:37:11,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,234 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-21 01:37:11,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 1 [2021-11-21 01:37:11,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:11,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2021-11-21 01:37:11,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:11,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:11,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2021-11-21 01:37:12,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:12,091 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 17 treesize of output 9 [2021-11-21 01:37:12,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:12,616 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:12,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 144 treesize of output 172 [2021-11-21 01:37:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:13,699 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 17 treesize of output 9 [2021-11-21 01:37:13,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:13,773 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:37:13,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 43 treesize of output 51 [2021-11-21 01:37:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-21 01:37:14,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466489665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:14,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258345641] [2021-11-21 01:37:14,065 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:37:14,065 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:37:14,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:37:14,066 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:37:14,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:37:14,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:37:14,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:14,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:37:14,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:37:14,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:37:14,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:37:14,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:37:14,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:37:14,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:37:14,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:14,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:37:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:37:15,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:37:15,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:37:15,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:37:15,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,282 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:37:15,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:37:15,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:37:15,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:37:15,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,513 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:37:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,818 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:37:15,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:15,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:37:15,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:15,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:15,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:37:16,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:16,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:16,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:16,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:16,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:16,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:37:17,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:37:17,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:37:17,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:37:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,359 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:37:17,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:37:17,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:37:17,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:37:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,589 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:37:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:17,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:37:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,013 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:37:18,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:37:18,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:18,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:37:19,803 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:37:19,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:37:19,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:19,897 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:37:19,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:37:20,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:20,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:20,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:21,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:21,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:21,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:22,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:22,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:22,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:23,675 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-21 01:37:23,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:37:25,052 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:37:25,839 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:37:27,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:37:27,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:37:27,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:27,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:37:27,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:37:27,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:27,649 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:37:27,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:37:27,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:37:27,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:37:27,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:37:27,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:37:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:37:28,095 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:37:31,980 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:37:31,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:37:31,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 51 [2021-11-21 01:37:31,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979387854] [2021-11-21 01:37:31,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:31,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-21 01:37:31,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-21 01:37:31,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=3610, Unknown=46, NotChecked=896, Total=4830 [2021-11-21 01:37:31,984 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 52 states have internal predecessors, (100), 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) [2021-11-21 01:38:00,444 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse4 4)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse2 (select .cse3 4)) (.cse1 (select |c_#length| .cse0))) (and (not (= |c_ULTIMATE.start_main_~s~0#1.base| .cse0)) (= .cse1 12) (= 0 .cse2) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_64| Int)) (or (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_64|) (and (forall ((v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (<= (+ (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) 8) (select |c_#length| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_3) 4)))) (forall ((v_DerPreprocessor_4 Int)) (<= 0 (+ (select (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_64| v_DerPreprocessor_4) 4) 4)))))) (= (select .cse3 8) 0) (<= 0 .cse2) (= (select .cse4 8) 0) (<= (+ 12 .cse2) .cse1) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0))))) is different from false [2021-11-21 01:38:13,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:38:13,290 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-11-21 01:38:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 01:38:13,290 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 52 states have internal predecessors, (100), 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 34 [2021-11-21 01:38:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:38:13,291 INFO L225 Difference]: With dead ends: 109 [2021-11-21 01:38:13,291 INFO L226 Difference]: Without dead ends: 109 [2021-11-21 01:38:13,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 136.9s TimeCoverageRelationStatistics Valid=531, Invalid=5924, Unknown=57, NotChecked=1320, Total=7832 [2021-11-21 01:38:13,294 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 199 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 580 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:38:13,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 109 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 539 Invalid, 0 Unknown, 580 Unchecked, 0.4s Time] [2021-11-21 01:38:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-21 01:38:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2021-11-21 01:38:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.1590909090909092) internal successors, (102), 92 states have internal predecessors, (102), 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) [2021-11-21 01:38:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2021-11-21 01:38:13,297 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 34 [2021-11-21 01:38:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:38:13,297 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2021-11-21 01:38:13,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 52 states have internal predecessors, (100), 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) [2021-11-21 01:38:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2021-11-21 01:38:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:38:13,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:38:13,298 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:38:13,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:38:13,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:13,498 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:38:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:38:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash -316295001, now seen corresponding path program 1 times [2021-11-21 01:38:13,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:38:13,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568819219] [2021-11-21 01:38:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:13,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:38:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:38:13,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:38:13,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568819219] [2021-11-21 01:38:13,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568819219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:38:13,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600778433] [2021-11-21 01:38:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:38:13,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:38:13,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:38:13,778 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:38:13,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 01:38:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:38:13,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-21 01:38:13,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:38:13,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:38:13,910 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:38:13,911 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 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:38:13,933 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 13 treesize of output 9 [2021-11-21 01:38:13,948 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 43 treesize of output 36 [2021-11-21 01:38:13,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:13,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:13,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 26 [2021-11-21 01:38:13,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:14,008 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 01:38:14,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-11-21 01:38:14,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:14,286 INFO L354 Elim1Store]: treesize reduction 171, result has 16.2 percent of original size [2021-11-21 01:38:14,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 64 [2021-11-21 01:38:14,379 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-21 01:38:14,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 29 [2021-11-21 01:38:14,456 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:14,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 35 [2021-11-21 01:38:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:14,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:15,032 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (v_DerPreprocessor_7 Int)) (or (not (= (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|))) is different from false [2021-11-21 01:38:15,644 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (|ULTIMATE.start_dll_update_at_~head#1.offset| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int)) (or (not (= (select (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) |ULTIMATE.start_dll_update_at_~head#1.offset| v_DerPreprocessor_8)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|))) is different from false [2021-11-21 01:38:16,355 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_77| Int)) (or (not (= (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_update_at_~head#1.base|) (+ |c_ULTIMATE.start_dll_update_at_~head#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_dll_update_at_~head#1.offset_77| v_DerPreprocessor_8))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|))) is different from false [2021-11-21 01:38:17,043 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_77| Int)) (or (not (= (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_dll_update_at_~head#1.offset_77| v_DerPreprocessor_8))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|))) is different from false [2021-11-21 01:38:17,728 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_77| Int)) (or (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|) (not (= (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_dll_update_at_~head#1.offset_77| v_DerPreprocessor_8))) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)))) is different from false [2021-11-21 01:38:26,384 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_77| Int)) (or (not (= (select (store (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) |v_ULTIMATE.start_dll_update_at_~head#1.offset_77| v_DerPreprocessor_8)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|))) is different from false [2021-11-21 01:38:28,260 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|ULTIMATE.start_dll_create_~head~0#1.offset| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_77| Int)) (or (not (= (select (store (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8) 0)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_create_~head~0#1.offset| 8) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)))) (store .cse0 .cse1 (store (select .cse0 .cse1) |v_ULTIMATE.start_dll_update_at_~head#1.offset_77| v_DerPreprocessor_8)))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|))) is different from false [2021-11-21 01:38:28,435 INFO L354 Elim1Store]: treesize reduction 472, result has 30.0 percent of original size [2021-11-21 01:38:28,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 676 treesize of output 455 [2021-11-21 01:38:28,450 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:28,450 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 467 treesize of output 461 [2021-11-21 01:38:28,469 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:28,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 461 treesize of output 465 [2021-11-21 01:38:28,482 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:28,482 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 465 treesize of output 461 [2021-11-21 01:38:28,517 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 8 treesize of output 4 [2021-11-21 01:38:28,566 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 8 treesize of output 4 [2021-11-21 01:38:28,656 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:28,656 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 24 treesize of output 28 [2021-11-21 01:38:28,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:28,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:28,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 437 treesize of output 511 [2021-11-21 01:38:37,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:37,757 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:37,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 50 treesize of output 62 [2021-11-21 01:38:37,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:37,889 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 38 treesize of output 30 [2021-11-21 01:38:38,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:38,122 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:38,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 554 treesize of output 546 [2021-11-21 01:38:44,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:44,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:38:44,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 788 treesize of output 808 [2021-11-21 01:38:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-21 01:38:45,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600778433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:45,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253549178] [2021-11-21 01:38:45,651 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-21 01:38:45,651 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:38:45,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:38:45,651 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:38:45,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:38:45,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:45,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:38:45,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:45,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:38:45,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:45,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:45,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:38:46,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:38:46,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:38:46,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:38:46,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:38:46,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:38:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:38:46,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:38:46,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:38:46,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:46,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:38:47,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,020 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:38:47,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:38:47,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:38:47,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,229 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:38:47,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:38:47,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:38:47,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:47,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:38:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:47,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:38:47,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:47,781 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:38:48,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:38:48,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:38:48,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 34 treesize of output 25 [2021-11-21 01:38:48,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:48,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:38:49,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:38:49,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,117 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:38:49,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:38:49,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:38:49,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,305 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:38:49,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:38:49,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:38:49,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,906 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:38:49,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:49,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:38:51,396 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:38:51,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:38:51,461 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:38:51,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:38:51,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:38:52,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:52,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:38:52,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:53,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:53,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:38:53,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:53,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:38:53,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:53,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:55,637 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-21 01:38:55,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:38:56,476 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:38:57,341 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:38:59,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:38:59,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:38:59,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:59,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:38:59,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:38:59,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:59,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:59,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:59,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:38:59,492 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:38:59,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:38:59,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:38:59,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:38:59,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:59,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:38:59,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:59,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:38:59,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:38:59,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:38:59,808 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:39:03,679 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:39:03,679 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:39:03,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 44 [2021-11-21 01:39:03,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016184673] [2021-11-21 01:39:03,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:39:03,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-21 01:39:03,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:39:03,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-21 01:39:03,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2824, Unknown=18, NotChecked=798, Total=3906 [2021-11-21 01:39:03,682 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 44 states have internal predecessors, (86), 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) [2021-11-21 01:39:07,926 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse1 4))) (and (not (= 0 .cse0)) (not (= |c_ULTIMATE.start_main_~s~0#1.base| .cse0)) (= (select .cse1 8) 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_75| Int) (v_DerPreprocessor_7 Int)) (or (not (= (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_75| v_DerPreprocessor_7) 4) 0)) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_75|))) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0)))) is different from false [2021-11-21 01:39:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:39:08,553 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2021-11-21 01:39:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 01:39:08,554 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 44 states have internal predecessors, (86), 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 34 [2021-11-21 01:39:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:39:08,555 INFO L225 Difference]: With dead ends: 109 [2021-11-21 01:39:08,555 INFO L226 Difference]: Without dead ends: 109 [2021-11-21 01:39:08,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=483, Invalid=4500, Unknown=19, NotChecked=1160, Total=6162 [2021-11-21 01:39:08,557 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 196 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 444 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:39:08,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 137 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 297 Invalid, 0 Unknown, 444 Unchecked, 0.2s Time] [2021-11-21 01:39:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-21 01:39:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2021-11-21 01:39:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 94 states have internal predecessors, (102), 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) [2021-11-21 01:39:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-11-21 01:39:08,561 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 34 [2021-11-21 01:39:08,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:39:08,561 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-11-21 01:39:08,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.9545454545454546) internal successors, (86), 44 states have internal predecessors, (86), 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) [2021-11-21 01:39:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-11-21 01:39:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 01:39:08,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:39:08,562 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:39:08,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-21 01:39:08,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:08,778 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:39:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:39:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash 981969878, now seen corresponding path program 1 times [2021-11-21 01:39:08,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:39:08,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544818785] [2021-11-21 01:39:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:08,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:39:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:39:09,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:39:09,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544818785] [2021-11-21 01:39:09,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544818785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:39:09,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977063824] [2021-11-21 01:39:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:39:09,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:39:09,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:39:09,109 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:39:09,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-21 01:39:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:39:09,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-21 01:39:09,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:39:09,175 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 6 treesize of output 5 [2021-11-21 01:39:09,231 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:39:09,231 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 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 01:39:09,277 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 13 treesize of output 9 [2021-11-21 01:39:09,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:09,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:39:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:39:09,378 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 01:39:09,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 43 [2021-11-21 01:39:09,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:39:09,718 INFO L354 Elim1Store]: treesize reduction 120, result has 21.1 percent of original size [2021-11-21 01:39:09,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 71 treesize of output 64 [2021-11-21 01:39:09,863 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-11-21 01:39:09,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 30 [2021-11-21 01:39:09,978 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:39:09,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-21 01:39:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:39:10,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:39:10,685 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_87| Int) (v_DerPreprocessor_9 Int)) (or (<= (+ (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_87| v_DerPreprocessor_9) 4) 1) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_87|))) is different from false [2021-11-21 01:40:10,295 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_87| Int) (v_DerPreprocessor_9 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_89| Int) (v_DerPreprocessor_10 Int)) (or (<= (+ (select (store (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |v_ULTIMATE.start_dll_update_at_~head#1.offset_89| v_DerPreprocessor_10))) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_87| v_DerPreprocessor_9) 4) 1) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_87|))) is different from false [2021-11-21 01:41:47,829 INFO L354 Elim1Store]: treesize reduction 472, result has 30.0 percent of original size [2021-11-21 01:41:47,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 683 treesize of output 462 [2021-11-21 01:41:47,842 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:41:47,842 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 474 treesize of output 468 [2021-11-21 01:41:47,859 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:41:47,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 468 treesize of output 472 [2021-11-21 01:41:47,873 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:41:47,873 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 472 treesize of output 468 [2021-11-21 01:41:47,900 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 8 treesize of output 4 [2021-11-21 01:41:47,931 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 8 treesize of output 6 [2021-11-21 01:41:47,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:47,965 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 17 treesize of output 11 [2021-11-21 01:41:48,025 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 8 treesize of output 4 [2021-11-21 01:41:59,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:59,254 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:41:59,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 168 treesize of output 206 [2021-11-21 01:42:00,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:00,372 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:42:00,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 122 treesize of output 196 [2021-11-21 01:42:03,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:03,530 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:42:03,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 46 treesize of output 58 [2021-11-21 01:42:03,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:03,634 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 38 treesize of output 30 [2021-11-21 01:42:03,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:03,670 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 38 treesize of output 30 [2021-11-21 01:42:03,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:03,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:42:03,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 353 treesize of output 381 [2021-11-21 01:42:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-21 01:42:05,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977063824] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:42:05,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013916528] [2021-11-21 01:42:05,200 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-21 01:42:05,201 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:42:05,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:42:05,201 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:42:05,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:42:05,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:42:05,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 01:42:05,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:05,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:05,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:42:05,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:42:05,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:42:05,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-21 01:42:05,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:42:05,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:05,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:42:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:42:06,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 21 [2021-11-21 01:42:06,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:42:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:42:06,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,595 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:42:06,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:42:06,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 28 treesize of output 30 [2021-11-21 01:42:06,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:42:06,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:42:06,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:06,872 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:42:07,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,085 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:42:07,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:07,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:42:07,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:07,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-21 01:42:07,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:07,954 INFO L354 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2021-11-21 01:42:07,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2021-11-21 01:42:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-21 01:42:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-21 01:42:08,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 28 [2021-11-21 01:42:08,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 41 treesize of output 37 [2021-11-21 01:42:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 34 [2021-11-21 01:42:08,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,777 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:42:08,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:08,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:42:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,019 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:42:09,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 01:42:09,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:42:09,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,484 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 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-21 01:42:09,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:09,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 52 [2021-11-21 01:42:11,141 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:42:11,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:42:11,236 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-21 01:42:11,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2021-11-21 01:42:11,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:42:12,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:12,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:12,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:42:12,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:12,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:12,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:42:13,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:42:13,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:13,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:15,157 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-21 01:42:15,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:42:16,497 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:42:17,637 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 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-21 01:42:18,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:42:18,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 9 [2021-11-21 01:42:18,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:18,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 01:42:18,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 01:42:19,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:42:19,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:42:19,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:19,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:19,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:42:19,052 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:42:19,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 207 treesize of output 193 [2021-11-21 01:42:19,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:19,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:42:19,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:19,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:42:19,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:19,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-21 01:42:19,375 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:42:23,052 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:42:23,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:42:23,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 46 [2021-11-21 01:42:23,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120172641] [2021-11-21 01:42:23,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:42:23,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-21 01:42:23,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-21 01:42:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3480, Unknown=132, NotChecked=246, Total=4160 [2021-11-21 01:42:23,055 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 47 states have internal predecessors, (94), 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) [2021-11-21 01:42:28,580 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|))) (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (and (<= (+ .cse0 1) |c_#StackHeapBarrier|) (not (= |c_ULTIMATE.start_main_~s~0#1.base| 0)) (not (= .cse0 |c_ULTIMATE.start_main_~s~0#1.base|)) (= (select .cse1 8) 0) (forall ((|v_ULTIMATE.start_dll_update_at_~head#1.offset_87| Int) (v_DerPreprocessor_9 Int)) (or (<= (+ (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_87| v_DerPreprocessor_9) 4) 1) |c_#StackHeapBarrier|) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_87|))) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0)))) is different from false [2021-11-21 01:42:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:38,277 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2021-11-21 01:42:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-21 01:42:38,278 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 47 states have internal predecessors, (94), 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 36 [2021-11-21 01:42:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:38,278 INFO L225 Difference]: With dead ends: 112 [2021-11-21 01:42:38,278 INFO L226 Difference]: Without dead ends: 112 [2021-11-21 01:42:38,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 176.7s TimeCoverageRelationStatistics Valid=542, Invalid=5969, Unknown=143, NotChecked=486, Total=7140 [2021-11-21 01:42:38,281 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 126 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 533 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:38,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 368 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 561 Invalid, 0 Unknown, 533 Unchecked, 0.3s Time] [2021-11-21 01:42:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-21 01:42:38,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2021-11-21 01:42:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.141304347826087) internal successors, (105), 96 states have internal predecessors, (105), 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) [2021-11-21 01:42:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2021-11-21 01:42:38,285 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 36 [2021-11-21 01:42:38,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:38,285 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2021-11-21 01:42:38,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0434782608695654) internal successors, (94), 47 states have internal predecessors, (94), 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) [2021-11-21 01:42:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2021-11-21 01:42:38,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 01:42:38,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:38,286 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:38,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:38,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-21 01:42:38,503 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 19 more)] === [2021-11-21 01:42:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash 842553914, now seen corresponding path program 2 times [2021-11-21 01:42:38,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:38,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119391514] [2021-11-21 01:42:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:38,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:39,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119391514] [2021-11-21 01:42:39,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119391514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:42:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84305225] [2021-11-21 01:42:39,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:42:39,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:42:39,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:39,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:42:39,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b78f7f68-6ade-453d-bf2d-c04ab0cace03/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-21 01:42:39,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:42:39,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:42:39,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-21 01:42:39,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:39,528 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 6 treesize of output 5 [2021-11-21 01:42:39,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:42:39,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:42:39,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:39,592 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 23 treesize of output 22 [2021-11-21 01:42:39,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:39,600 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 23 treesize of output 22 [2021-11-21 01:42:39,738 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:42:39,738 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 11 treesize of output 11 [2021-11-21 01:42:39,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:42:39,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-11-21 01:42:39,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:42:39,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-21 01:42:39,904 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:42:39,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:42:39,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:42:39,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-21 01:42:40,025 INFO L354 Elim1Store]: treesize reduction 128, result has 12.9 percent of original size [2021-11-21 01:42:40,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 136 treesize of output 92 [2021-11-21 01:42:40,045 INFO L354 Elim1Store]: treesize reduction 176, result has 9.7 percent of original size [2021-11-21 01:42:40,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 113 treesize of output 102 [2021-11-21 01:42:40,489 INFO L354 Elim1Store]: treesize reduction 176, result has 15.8 percent of original size [2021-11-21 01:42:40,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 165 treesize of output 116 [2021-11-21 01:42:40,524 INFO L354 Elim1Store]: treesize reduction 260, result has 14.8 percent of original size [2021-11-21 01:42:40,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 105 [2021-11-21 01:42:40,706 INFO L354 Elim1Store]: treesize reduction 176, result has 15.8 percent of original size [2021-11-21 01:42:40,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 99 [2021-11-21 01:42:40,743 INFO L354 Elim1Store]: treesize reduction 236, result has 16.0 percent of original size [2021-11-21 01:42:40,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 108 treesize of output 105 [2021-11-21 01:42:41,007 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 105 treesize of output 104 [2021-11-21 01:42:41,185 INFO L354 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2021-11-21 01:42:41,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 136 treesize of output 87 [2021-11-21 01:42:41,206 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-21 01:42:41,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 69 [2021-11-21 01:42:41,210 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:42:41,211 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 49 treesize of output 45 [2021-11-21 01:42:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:42:41,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:41,345 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 10 treesize of output 8 [2021-11-21 01:42:51,707 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_99| Int)) (let ((.cse0 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11))) (let ((.cse1 (select .cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (or (and (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base| .cse0) .cse1) 4) 0) (forall ((v_DerPreprocessor_12 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_12)) (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) 4) 0))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_99|) (= |c_ULTIMATE.start_main_~s~0#1.base| .cse1))))) is different from false [2021-11-21 01:44:30,703 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_100| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_99| Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (let ((.cse5 (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0))) (store |c_#memory_$Pointer$.base| .cse7 (store (select |c_#memory_$Pointer$.base| .cse7) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13))))) (let ((.cse6 (store (select .cse5 |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11))) (let ((.cse1 (select .cse6 .cse0))) (or (< (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~s~0#1.base|) .cse0) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100|) (= .cse1 |c_ULTIMATE.start_main_~s~0#1.base|) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_99|) (and (forall ((v_DerPreprocessor_14 Int) (v_DerPreprocessor_12 Int)) (= (select (let ((.cse4 (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) .cse4))) (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_14)))) (store .cse2 |c_ULTIMATE.start_main_~s~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_12))) (select (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13)) |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11) .cse4)))) 4) 0)) (= (select (select (store .cse5 |c_ULTIMATE.start_main_~s~0#1.base| .cse6) .cse1) 4) 0)))))))) is different from false [2021-11-21 01:44:33,076 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_100| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_99| Int)) (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4))) (let ((.cse5 (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse0))) (store |c_#memory_$Pointer$.base| .cse7 (store (select |c_#memory_$Pointer$.base| .cse7) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13))))) (let ((.cse6 (store (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11))) (let ((.cse1 (select .cse6 .cse0))) (or (< |c_ULTIMATE.start_dll_create_~head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_99|) (< (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse0) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100|) (= |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse1) (and (forall ((v_DerPreprocessor_14 Int) (v_DerPreprocessor_12 Int)) (= 0 (select (let ((.cse4 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 4))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse4))) (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_14)))) (store .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse2 |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_12))) (select (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13)) |c_ULTIMATE.start_dll_create_~head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11) .cse4)))) 4))) (= (select (select (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse6) .cse1) 4) 0)))))))) is different from false [2021-11-21 01:44:35,446 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_100| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_99| Int)) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (let ((.cse4 (let ((.cse7 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse6))) (store |c_#memory_$Pointer$.base| .cse7 (store (select |c_#memory_$Pointer$.base| .cse7) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13))))) (let ((.cse5 (store (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11))) (let ((.cse0 (select .cse5 .cse6))) (or (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (and (forall ((v_DerPreprocessor_14 Int) (v_DerPreprocessor_12 Int)) (= (select (let ((.cse3 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse3))) (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_14)))) (store .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_12))) (select (store (select (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11) .cse3)))) 4) 0)) (= (select (select (store .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse5) .cse0) 4) 0)) (< (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse6) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_99|))))))) is different from false [2021-11-21 01:44:37,959 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_100| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_99| Int)) (let ((.cse10 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse9 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse6 (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse10))) (store .cse11 .cse12 (store (select .cse11 .cse12) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13)))))) (let ((.cse7 (store (select .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11))) (let ((.cse8 (select .cse7 .cse10))) (or (and (forall ((v_DerPreprocessor_14 Int) (v_DerPreprocessor_12 Int)) (= (select (let ((.cse3 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (.cse5 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse5))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)))) (store .cse1 .cse2 (store (select .cse1 .cse2) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_14))))) (store .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_12))) (select (store (select (store .cse4 .cse2 (store (select .cse4 .cse2) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11) .cse5))))) 4) 0)) (= (select (select (store .cse6 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse7) .cse8) 4) 0)) (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse8) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_99|) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse9 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse10) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100|))))))) is different from false [2021-11-21 01:44:41,390 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_13 Int) (v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_100| Int) (|v_ULTIMATE.start_dll_update_at_~head#1.offset_99| Int)) (let ((.cse15 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) (.cse13 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse14 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse10 (let ((.cse16 (let ((.cse18 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse14 0)))) (store .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse13 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) (let ((.cse17 (select (select .cse16 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse15))) (store .cse16 .cse17 (store (select .cse16 .cse17) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13)))))) (let ((.cse11 (store (select .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11))) (let ((.cse0 (select .cse11 .cse15))) (or (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (and (forall ((v_DerPreprocessor_14 Int) (v_DerPreprocessor_12 Int)) (= (select (let ((.cse5 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse6 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 8))) (let ((.cse7 (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse6 0)))) (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)))) (.cse8 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (let ((.cse3 (select (select .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse8))) (select (let ((.cse1 (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse6 0)))) (store .cse4 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))))) (store .cse2 .cse3 (store (select .cse2 .cse3) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_14))))) (store .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_12))) (select (store (select (store .cse7 .cse3 (store (select .cse7 .cse3) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100| v_DerPreprocessor_13)) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |v_ULTIMATE.start_dll_update_at_~head#1.offset_99| v_DerPreprocessor_11) .cse8))))) 4) 0)) (= (select (select (store .cse10 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse11) .cse0) 4) 0)) (< (select (select (let ((.cse12 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse14 0)))) (store .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse12 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse13 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|))) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse15) |v_ULTIMATE.start_dll_update_at_~head#1.offset_100|) (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_dll_update_at_~head#1.offset_99|))))))) is different from false