./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/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_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:43:43,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:43:43,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:43:43,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:43:43,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:43:43,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:43:43,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:43:43,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:43:43,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:43:43,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:43:43,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:43:43,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:43:43,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:43:43,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:43:43,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:43:43,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:43:43,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:43:43,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:43:43,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:43:43,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:43:43,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:43:43,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:43:43,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:43:43,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:43:43,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:43:43,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:43:43,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:43:43,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:43:43,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:43:43,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:43:43,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:43:43,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:43:43,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:43:43,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:43:43,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:43:43,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:43:43,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:43:43,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:43:43,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:43:43,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:43:43,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:43:43,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:43:43,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:43:43,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:43:43,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:43:43,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:43:43,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:43:43,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:43:43,965 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:43:43,966 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:43:43,966 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:43:43,966 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:43:43,966 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:43:43,967 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:43:43,967 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:43:43,967 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:43:43,967 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:43:43,968 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:43:43,968 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:43:43,968 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:43:43,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:43:43,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:43:43,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:43:43,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:43:43,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:43:43,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:43:43,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:43:43,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:43:43,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:43:43,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:43:43,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:43:43,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:43:43,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:43:43,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:43:43,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:43:43,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:43:43,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:43:43,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:43:43,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:43:43,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:43:43,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:43:43,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:43:43,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:43:43,974 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_73485234-7270-4399-8ed4-579e075b0bef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2021-11-21 00:43:44,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:43:44,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:43:44,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:43:44,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:43:44,295 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:43:44,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2021-11-21 00:43:44,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/data/885a58fad/9439ee6fe60b42b8be7414497d2827cc/FLAG97cae3a89 [2021-11-21 00:43:45,046 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:43:45,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2021-11-21 00:43:45,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/data/885a58fad/9439ee6fe60b42b8be7414497d2827cc/FLAG97cae3a89 [2021-11-21 00:43:45,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/data/885a58fad/9439ee6fe60b42b8be7414497d2827cc [2021-11-21 00:43:45,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:43:45,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:43:45,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:43:45,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:43:45,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:43:45,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673ee018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45, skipping insertion in model container [2021-11-21 00:43:45,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:43:45,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:43:45,719 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_73485234-7270-4399-8ed4-579e075b0bef/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2021-11-21 00:43:45,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:43:45,752 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:43:45,766 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_73485234-7270-4399-8ed4-579e075b0bef/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2021-11-21 00:43:45,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:43:45,792 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:43:45,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45 WrapperNode [2021-11-21 00:43:45,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:43:45,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:43:45,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:43:45,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:43:45,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,837 INFO L137 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2021-11-21 00:43:45,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:43:45,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:43:45,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:43:45,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:43:45,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:43:45,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:43:45,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:43:45,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:43:45,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (1/1) ... [2021-11-21 00:43:45,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:43:45,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:45,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:43:45,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:43:46,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:43:46,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:43:46,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:43:46,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:43:46,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:43:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:43:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:43:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:43:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:43:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:43:46,111 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:43:46,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:43:46,356 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:43:46,424 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:43:46,424 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:43:46,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:43:46 BoogieIcfgContainer [2021-11-21 00:43:46,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:43:46,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:43:46,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:43:46,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:43:46,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:43:45" (1/3) ... [2021-11-21 00:43:46,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa3824a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:43:46, skipping insertion in model container [2021-11-21 00:43:46,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:43:45" (2/3) ... [2021-11-21 00:43:46,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa3824a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:43:46, skipping insertion in model container [2021-11-21 00:43:46,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:43:46" (3/3) ... [2021-11-21 00:43:46,453 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2021-11-21 00:43:46,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:43:46,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:43:46,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:43:46,542 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:43:46,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:43:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:43:46,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:43:46,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:46,581 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:46,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:43:46,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1517292925, now seen corresponding path program 1 times [2021-11-21 00:43:46,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:46,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41296074] [2021-11-21 00:43:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:46,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:43:47,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:47,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41296074] [2021-11-21 00:43:47,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41296074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:47,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:47,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:43:47,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58562104] [2021-11-21 00:43:47,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:47,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:43:47,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:43:47,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:43:47,093 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:43:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:47,176 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-11-21 00:43:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:43:47,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2021-11-21 00:43:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:47,189 INFO L225 Difference]: With dead ends: 27 [2021-11-21 00:43:47,190 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 00:43:47,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:43:47,200 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:47,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:43:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 00:43:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-11-21 00:43:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:43:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-21 00:43:47,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 12 [2021-11-21 00:43:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:47,267 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-21 00:43:47,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:43:47,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-21 00:43:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:43:47,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:47,271 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:47,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:43:47,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:43:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash -213805710, now seen corresponding path program 1 times [2021-11-21 00:43:47,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:47,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475649956] [2021-11-21 00:43:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:47,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:43:47,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:47,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475649956] [2021-11-21 00:43:47,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475649956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:43:47,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023395012] [2021-11-21 00:43:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:47,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:43:47,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:43:47,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:43:47,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:43:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:47,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:43:47,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:43:47,626 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 00:43:47,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:47,710 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-11-21 00:43:47,711 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 2 case distinctions, treesize of input 32 treesize of output 39 [2021-11-21 00:43:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:43:48,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:43:48,131 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:43:48,132 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 662 treesize of output 606 [2021-11-21 00:43:56,876 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-11-21 00:43:56,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 365 treesize of output 261 [2021-11-21 00:43:56,893 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 493 treesize of output 483 [2021-11-21 00:43:57,682 INFO L354 Elim1Store]: treesize reduction 33, result has 61.2 percent of original size [2021-11-21 00:43:57,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 621 treesize of output 520 [2021-11-21 00:43:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:43:58,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023395012] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:43:58,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1128088300] [2021-11-21 00:43:58,726 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 00:43:58,726 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:43:58,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:43:58,749 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:43:58,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:43:59,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,485 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:43:59,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:43:59,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-11-21 00:43:59,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,754 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 61 treesize of output 73 [2021-11-21 00:43:59,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:43:59,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:43:59,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:43:59,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:43:59,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:00,019 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-21 00:44:00,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 332 treesize of output 348 [2021-11-21 00:44:00,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:00,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:00,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:00,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:00,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:00,476 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:44:00,477 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:44:00,953 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:44:01,041 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:44:01,566 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:44:01,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:44:01,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-21 00:44:01,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306743836] [2021-11-21 00:44:01,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:44:01,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:44:01,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:01,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:44:01,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:44:01,570 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:44:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:01,744 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-11-21 00:44:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:44:01,745 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 13 [2021-11-21 00:44:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:01,746 INFO L225 Difference]: With dead ends: 24 [2021-11-21 00:44:01,746 INFO L226 Difference]: Without dead ends: 19 [2021-11-21 00:44:01,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-21 00:44:01,749 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:01,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 1 Unchecked, 0.1s Time] [2021-11-21 00:44:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-21 00:44:01,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2021-11-21 00:44:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:44:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-21 00:44:01,761 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 13 [2021-11-21 00:44:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:01,761 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-21 00:44:01,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:44:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-21 00:44:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:44:01,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:01,763 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:44:01,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:44:01,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:44:01,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:44:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:01,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1956711453, now seen corresponding path program 2 times [2021-11-21 00:44:01,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:01,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102030307] [2021-11-21 00:44:01,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:01,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:02,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:44:02,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:02,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102030307] [2021-11-21 00:44:02,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102030307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:44:02,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373504504] [2021-11-21 00:44:02,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:44:02,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:44:02,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:44:02,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:44:02,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:44:02,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:44:02,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:44:02,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-21 00:44:02,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:44:02,442 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 00:44:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:02,483 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-11-21 00:44:02,487 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 2 case distinctions, treesize of input 32 treesize of output 39 [2021-11-21 00:44:02,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:02,597 INFO L354 Elim1Store]: treesize reduction 319, result has 9.9 percent of original size [2021-11-21 00:44:02,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 103 [2021-11-21 00:44:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:44:02,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:44:03,094 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:44:03,096 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 1732118 treesize of output 1584670 [2021-11-21 00:44:05,683 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:44:05,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [426782438] [2021-11-21 00:44:05,687 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-21 00:44:05,687 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:44:05,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:44:05,699 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:44:05,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:44:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,318 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:44:06,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:44:06,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,462 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:44:06,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:44:06,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 73 [2021-11-21 00:44:06,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:06,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:06,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:06,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:06,969 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-21 00:44:06,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 332 treesize of output 348 [2021-11-21 00:44:07,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:07,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:07,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:07,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:07,491 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:44:07,491 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:44:07,925 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:44:08,026 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:44:08,534 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:44:08,535 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:44:08,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-21 00:44:08,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156966248] [2021-11-21 00:44:08,535 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:44:08,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:44:08,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:44:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:44:08,537 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:44:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:08,622 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-21 00:44:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:44:08,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-21 00:44:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:08,624 INFO L225 Difference]: With dead ends: 19 [2021-11-21 00:44:08,624 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 00:44:08,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-21 00:44:08,627 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:08,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:44:08,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 00:44:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-21 00:44:08,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:44:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-21 00:44:08,633 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2021-11-21 00:44:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:08,634 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-21 00:44:08,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:44:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-21 00:44:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:44:08,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:08,636 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:44:08,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-21 00:44:08,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:44:08,854 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:44:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1100203882, now seen corresponding path program 1 times [2021-11-21 00:44:08,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:08,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692874331] [2021-11-21 00:44:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:08,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:44:09,184 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:09,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692874331] [2021-11-21 00:44:09,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692874331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:44:09,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847517607] [2021-11-21 00:44:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:09,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:44:09,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:44:09,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:44:09,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:44:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:09,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:44:09,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:44:09,273 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 00:44:09,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:09,331 INFO L354 Elim1Store]: treesize reduction 51, result has 19.0 percent of original size [2021-11-21 00:44:09,332 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 2 case distinctions, treesize of input 36 treesize of output 43 [2021-11-21 00:44:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:44:09,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:44:09,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:44:09,692 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 1514 treesize of output 1394 [2021-11-21 00:44:53,299 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-21 00:44:53,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 305 treesize of output 244 [2021-11-21 00:44:53,705 INFO L354 Elim1Store]: treesize reduction 38, result has 28.3 percent of original size [2021-11-21 00:44:53,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 40 [2021-11-21 00:44:53,714 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 00:44:53,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 128 treesize of output 1 [2021-11-21 00:44:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:44:53,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847517607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:44:53,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [438306229] [2021-11-21 00:44:53,787 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:44:53,787 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:44:53,787 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:44:53,788 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:44:53,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:44:54,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,365 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:44:54,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:44:54,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,534 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:44:54,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:44:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 59 [2021-11-21 00:44:54,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:54,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:54,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:54,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:54,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:54,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:55,004 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-21 00:44:55,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 316 treesize of output 344 [2021-11-21 00:44:55,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:55,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:55,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:55,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:55,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:44:55,749 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:44:55,749 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:44:56,605 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:44:56,700 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:44:57,505 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:44:57,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:44:57,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2021-11-21 00:44:57,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175289738] [2021-11-21 00:44:57,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:44:57,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 00:44:57,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:57,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 00:44:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2021-11-21 00:44:57,508 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:44:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:57,834 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-21 00:44:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:44:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-11-21 00:44:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:57,836 INFO L225 Difference]: With dead ends: 25 [2021-11-21 00:44:57,836 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 00:44:57,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2021-11-21 00:44:57,838 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:57,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 64 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 5 Unchecked, 0.1s Time] [2021-11-21 00:44:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 00:44:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-11-21 00:44:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:44:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-21 00:44:57,846 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2021-11-21 00:44:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:57,846 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-21 00:44:57,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:44:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-21 00:44:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:44:57,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:57,848 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:44:57,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:44:58,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:44:58,062 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:44:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2085490539, now seen corresponding path program 2 times [2021-11-21 00:44:58,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:58,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497749096] [2021-11-21 00:44:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:58,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:44:58,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:58,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497749096] [2021-11-21 00:44:58,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497749096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:44:58,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112585326] [2021-11-21 00:44:58,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:44:58,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:44:58,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:44:58,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:44:58,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:44:58,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:44:58,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:44:58,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 00:44:58,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:44:58,489 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 00:44:58,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:58,528 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-21 00:44:58,528 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 2 case distinctions, treesize of input 58 treesize of output 64 [2021-11-21 00:44:58,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:44:58,661 INFO L354 Elim1Store]: treesize reduction 396, result has 9.6 percent of original size [2021-11-21 00:44:58,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 125 [2021-11-21 00:44:59,389 INFO L354 Elim1Store]: treesize reduction 722, result has 1.0 percent of original size [2021-11-21 00:44:59,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 134 treesize of output 56 [2021-11-21 00:44:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:44:59,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:44:59,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:44:59,598 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 5713466 treesize of output 5221954 [2021-11-21 00:45:05,875 WARN L227 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 707 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:45:06,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:45:06,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153255458] [2021-11-21 00:45:06,164 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:45:06,164 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:45:06,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:45:06,165 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:45:06,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:45:06,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:06,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:06,804 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:45:06,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:45:06,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:06,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:06,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-11-21 00:45:07,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,022 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 47 treesize of output 59 [2021-11-21 00:45:07,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:07,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:07,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:07,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:07,309 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-21 00:45:07,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 316 treesize of output 344 [2021-11-21 00:45:07,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:07,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:07,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:07,939 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:45:07,939 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:45:08,827 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:45:08,925 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:45:09,749 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:45:09,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:45:09,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-21 00:45:09,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637000777] [2021-11-21 00:45:09,750 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:45:09,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:45:09,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:09,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:45:09,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2021-11-21 00:45:09,751 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:09,933 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-11-21 00:45:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:45:09,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-21 00:45:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:09,936 INFO L225 Difference]: With dead ends: 28 [2021-11-21 00:45:09,936 INFO L226 Difference]: Without dead ends: 26 [2021-11-21 00:45:09,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2021-11-21 00:45:09,938 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:09,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 44 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-21 00:45:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-11-21 00:45:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:45:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-21 00:45:09,946 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2021-11-21 00:45:09,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:09,947 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-21 00:45:09,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-21 00:45:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:45:09,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:09,948 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:09,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-21 00:45:10,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:10,154 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:10,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1283861757, now seen corresponding path program 3 times [2021-11-21 00:45:10,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:10,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761073529] [2021-11-21 00:45:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:10,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:10,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:10,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761073529] [2021-11-21 00:45:10,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761073529] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:10,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313805943] [2021-11-21 00:45:10,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:45:10,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:10,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:10,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:10,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:45:10,481 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:45:10,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:10,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-21 00:45:10,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:10,515 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 00:45:10,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:10,569 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-21 00:45:10,569 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 2 case distinctions, treesize of input 61 treesize of output 67 [2021-11-21 00:45:11,197 INFO L354 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2021-11-21 00:45:11,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 50 [2021-11-21 00:45:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:11,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:11,406 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:45:11,406 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 742 treesize of output 686 [2021-11-21 00:45:11,463 INFO L354 Elim1Store]: treesize reduction 38, result has 28.3 percent of original size [2021-11-21 00:45:11,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 298 treesize of output 216 [2021-11-21 00:45:11,470 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 435 treesize of output 419 [2021-11-21 00:45:11,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:11,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:11,615 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:45:11,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 465 treesize of output 365 [2021-11-21 00:45:11,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:11,883 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:11,883 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 212 treesize of output 1 [2021-11-21 00:45:11,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:11,909 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:11,910 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 248 treesize of output 1 [2021-11-21 00:45:11,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:11,947 INFO L354 Elim1Store]: treesize reduction 52, result has 32.5 percent of original size [2021-11-21 00:45:11,948 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 567 treesize of output 413 [2021-11-21 00:45:12,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,083 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,084 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 193 treesize of output 1 [2021-11-21 00:45:12,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,109 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:12,110 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 501 treesize of output 1 [2021-11-21 00:45:12,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,140 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,141 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 146 treesize of output 1 [2021-11-21 00:45:12,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,192 INFO L354 Elim1Store]: treesize reduction 52, result has 32.5 percent of original size [2021-11-21 00:45:12,192 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 398 treesize of output 284 [2021-11-21 00:45:12,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,312 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,313 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 146 treesize of output 1 [2021-11-21 00:45:12,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,395 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,396 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 97 treesize of output 1 [2021-11-21 00:45:12,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,416 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:12,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 255 treesize of output 1 [2021-11-21 00:45:12,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,473 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:12,474 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 358 treesize of output 1 [2021-11-21 00:45:12,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,497 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,497 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 144 treesize of output 1 [2021-11-21 00:45:12,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,524 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,524 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 163 treesize of output 1 [2021-11-21 00:45:12,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,564 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,564 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 199 treesize of output 1 [2021-11-21 00:45:12,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,589 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:12,589 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 424 treesize of output 1 [2021-11-21 00:45:12,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,625 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,626 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 97 treesize of output 1 [2021-11-21 00:45:12,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,649 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:12,650 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 97 treesize of output 1 [2021-11-21 00:45:12,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,700 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 00:45:12,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 331 treesize of output 1 [2021-11-21 00:45:12,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,789 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-21 00:45:12,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 608 treesize of output 474 [2021-11-21 00:45:12,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:12,991 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 00:45:12,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 317 treesize of output 1 [2021-11-21 00:45:13,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,034 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-21 00:45:13,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 554 treesize of output 1 [2021-11-21 00:45:13,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,090 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,090 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 201 treesize of output 1 [2021-11-21 00:45:13,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,115 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:13,115 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 464 treesize of output 1 [2021-11-21 00:45:13,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,161 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,162 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 248 treesize of output 1 [2021-11-21 00:45:13,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,184 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:13,184 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 567 treesize of output 1 [2021-11-21 00:45:13,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,210 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-21 00:45:13,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 464 treesize of output 1 [2021-11-21 00:45:13,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,234 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,234 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 201 treesize of output 1 [2021-11-21 00:45:13,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,255 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,256 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 152 treesize of output 1 [2021-11-21 00:45:13,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,285 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,285 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 152 treesize of output 1 [2021-11-21 00:45:13,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,314 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:13,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 321 treesize of output 1 [2021-11-21 00:45:13,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,332 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,333 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 152 treesize of output 1 [2021-11-21 00:45:13,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,385 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,385 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 199 treesize of output 1 [2021-11-21 00:45:13,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,413 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:13,414 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 424 treesize of output 1 [2021-11-21 00:45:13,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,467 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,468 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 217 treesize of output 1 [2021-11-21 00:45:13,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,547 INFO L354 Elim1Store]: treesize reduction 55, result has 6.8 percent of original size [2021-11-21 00:45:13,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 528 treesize of output 400 [2021-11-21 00:45:13,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,812 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-21 00:45:13,812 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 374 treesize of output 272 [2021-11-21 00:45:13,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,838 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,838 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 142 treesize of output 1 [2021-11-21 00:45:13,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,871 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,872 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 161 treesize of output 1 [2021-11-21 00:45:13,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,900 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,900 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 197 treesize of output 1 [2021-11-21 00:45:13,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,921 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:13,922 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 440 treesize of output 1 [2021-11-21 00:45:13,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,940 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-21 00:45:13,941 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 103 treesize of output 1 [2021-11-21 00:45:13,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:13,973 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:13,974 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 95 treesize of output 1 [2021-11-21 00:45:13,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,024 INFO L354 Elim1Store]: treesize reduction 55, result has 28.6 percent of original size [2021-11-21 00:45:14,024 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 271 treesize of output 200 [2021-11-21 00:45:14,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,048 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:14,049 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 95 treesize of output 1 [2021-11-21 00:45:14,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,091 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:14,091 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 45 treesize of output 1 [2021-11-21 00:45:14,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,132 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:14,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 1 [2021-11-21 00:45:14,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,148 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:14,148 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 45 treesize of output 1 [2021-11-21 00:45:14,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,168 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:14,168 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 45 treesize of output 1 [2021-11-21 00:45:14,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,211 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:14,212 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 297 treesize of output 1 [2021-11-21 00:45:14,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,233 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:14,233 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 148 treesize of output 1 [2021-11-21 00:45:14,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,278 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:14,278 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 93 treesize of output 1 [2021-11-21 00:45:14,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,314 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:14,314 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 231 treesize of output 1 [2021-11-21 00:45:14,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,343 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:14,343 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 112 treesize of output 1 [2021-11-21 00:45:14,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:14,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:14,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,380 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 83 treesize of output 1 [2021-11-21 00:45:14,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:14,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:14,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313805943] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:45:14,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1715675721] [2021-11-21 00:45:14,750 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:45:14,750 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:45:14,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:45:14,751 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:45:14,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:45:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,352 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:45:15,352 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 29 treesize of output 53 [2021-11-21 00:45:15,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,488 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:45:15,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:45:15,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,623 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 61 treesize of output 73 [2021-11-21 00:45:15,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:15,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:15,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:15,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:15,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:15,835 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-21 00:45:15,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 332 treesize of output 348 [2021-11-21 00:45:16,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:16,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:16,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:16,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:16,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:16,295 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:45:16,296 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:45:17,133 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:45:17,224 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:45:18,086 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:45:18,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:45:18,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-21 00:45:18,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838982315] [2021-11-21 00:45:18,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:45:18,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 00:45:18,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 00:45:18,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2021-11-21 00:45:18,088 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:18,475 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-11-21 00:45:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-21 00:45:18,476 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-21 00:45:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:18,477 INFO L225 Difference]: With dead ends: 40 [2021-11-21 00:45:18,477 INFO L226 Difference]: Without dead ends: 38 [2021-11-21 00:45:18,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2021-11-21 00:45:18,479 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:18,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 79 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2021-11-21 00:45:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-21 00:45:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2021-11-21 00:45:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:45:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-21 00:45:18,489 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 20 [2021-11-21 00:45:18,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:18,490 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-21 00:45:18,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:18,490 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-21 00:45:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 00:45:18,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:18,492 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:18,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:18,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 00:45:18,706 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash -945910883, now seen corresponding path program 4 times [2021-11-21 00:45:18,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:18,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584310851] [2021-11-21 00:45:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:18,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:19,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:19,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584310851] [2021-11-21 00:45:19,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584310851] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:19,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926541196] [2021-11-21 00:45:19,093 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:45:19,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:19,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:19,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:19,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:45:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-21 00:45:19,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:19,177 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 00:45:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:19,236 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-21 00:45:19,236 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 2 case distinctions, treesize of input 58 treesize of output 64 [2021-11-21 00:45:19,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:19,372 INFO L354 Elim1Store]: treesize reduction 396, result has 9.6 percent of original size [2021-11-21 00:45:19,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 125 [2021-11-21 00:45:22,449 INFO L354 Elim1Store]: treesize reduction 722, result has 1.0 percent of original size [2021-11-21 00:45:22,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 134 treesize of output 56 [2021-11-21 00:45:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:22,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:22,749 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:45:22,750 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 4640314 treesize of output 4247106 [2021-11-21 00:45:27,202 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:45:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1525124184] [2021-11-21 00:45:27,205 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:45:27,205 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:45:27,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:45:27,205 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:45:27,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:45:27,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,699 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:45:27,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:45:27,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,792 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:45:27,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:45:27,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:27,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 59 [2021-11-21 00:45:28,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:28,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:28,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:28,240 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-21 00:45:28,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 316 treesize of output 344 [2021-11-21 00:45:28,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:28,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:28,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:28,914 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:45:28,915 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:45:29,727 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:45:29,807 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:45:30,641 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:45:30,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:45:30,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-21 00:45:30,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747439629] [2021-11-21 00:45:30,642 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:45:30,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:45:30,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:30,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:45:30,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=875, Unknown=1, NotChecked=0, Total=992 [2021-11-21 00:45:30,644 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:33,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:33,225 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-11-21 00:45:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:45:33,226 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-21 00:45:33,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:33,227 INFO L225 Difference]: With dead ends: 49 [2021-11-21 00:45:33,227 INFO L226 Difference]: Without dead ends: 47 [2021-11-21 00:45:33,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=184, Invalid=1371, Unknown=5, NotChecked=0, Total=1560 [2021-11-21 00:45:33,229 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:33,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 97 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:33,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-21 00:45:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 22. [2021-11-21 00:45:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:45:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-21 00:45:33,237 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 22 [2021-11-21 00:45:33,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:33,238 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-21 00:45:33,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-21 00:45:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 00:45:33,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:33,240 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:33,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:33,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:33,454 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash 847280778, now seen corresponding path program 5 times [2021-11-21 00:45:33,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:33,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46989607] [2021-11-21 00:45:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:33,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:45:33,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46989607] [2021-11-21 00:45:33,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46989607] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:33,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268822285] [2021-11-21 00:45:33,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:45:33,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:33,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:33,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:33,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:45:33,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-21 00:45:33,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:33,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 00:45:33,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:33,969 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 00:45:34,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:34,013 INFO L354 Elim1Store]: treesize reduction 68, result has 17.1 percent of original size [2021-11-21 00:45:34,013 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:45:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:34,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:34,106 INFO L354 Elim1Store]: treesize reduction 233, result has 12.1 percent of original size [2021-11-21 00:45:34,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 87 [2021-11-21 00:45:34,779 INFO L354 Elim1Store]: treesize reduction 554, result has 1.2 percent of original size [2021-11-21 00:45:34,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 119 treesize of output 53 [2021-11-21 00:45:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:34,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:37,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:45:37,081 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 14432507 treesize of output 13223683 [2021-11-21 00:45:48,300 WARN L227 SmtUtils]: Spent 11.22s on a formula simplification that was a NOOP. DAG size: 1875 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:45:48,636 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:45:48,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1996172944] [2021-11-21 00:45:48,639 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:45:48,639 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:45:48,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:45:48,639 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:45:48,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:45:49,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,146 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:45:49,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:45:49,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,247 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:45:49,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:45:49,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,354 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 61 treesize of output 73 [2021-11-21 00:45:49,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:49,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:49,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:49,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:49,515 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-21 00:45:49,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 332 treesize of output 348 [2021-11-21 00:45:49,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:49,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:49,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:49,851 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:45:49,852 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:45:50,502 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:45:50,567 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:45:51,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:45:51,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:45:51,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-21 00:45:51,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479380056] [2021-11-21 00:45:51,288 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:45:51,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:45:51,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:45:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1051, Unknown=1, NotChecked=0, Total=1190 [2021-11-21 00:45:51,289 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:51,675 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-11-21 00:45:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:45:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-21 00:45:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:51,676 INFO L225 Difference]: With dead ends: 42 [2021-11-21 00:45:51,676 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 00:45:51,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=193, Invalid=1446, Unknown=1, NotChecked=0, Total=1640 [2021-11-21 00:45:51,678 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:51,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 55 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 00:45:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2021-11-21 00:45:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:45:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-21 00:45:51,686 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 23 [2021-11-21 00:45:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:51,686 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-21 00:45:51,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:45:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-21 00:45:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 00:45:51,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:51,687 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:51,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:51,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:51,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:45:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1471686795, now seen corresponding path program 6 times [2021-11-21 00:45:51,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:51,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249145285] [2021-11-21 00:45:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:51,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:45:52,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:52,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249145285] [2021-11-21 00:45:52,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249145285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:52,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398533884] [2021-11-21 00:45:52,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:45:52,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:52,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:52,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:52,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:45:52,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:45:52,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:52,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-21 00:45:52,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:52,376 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 00:45:52,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:52,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:52,454 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 36 treesize of output 43 [2021-11-21 00:45:52,881 INFO L354 Elim1Store]: treesize reduction 130, result has 5.1 percent of original size [2021-11-21 00:45:52,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 76 treesize of output 42 [2021-11-21 00:45:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:52,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:53,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:45:53,053 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 1088 treesize of output 1000 [2021-11-21 00:45:53,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,108 INFO L354 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2021-11-21 00:45:53,108 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 444 treesize of output 378 [2021-11-21 00:45:53,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,265 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-21 00:45:53,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1095 treesize of output 837 [2021-11-21 00:45:53,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,377 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:53,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1401 treesize of output 1071 [2021-11-21 00:45:53,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,606 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-11-21 00:45:53,607 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 202 treesize of output 142 [2021-11-21 00:45:53,612 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 311 treesize of output 299 [2021-11-21 00:45:53,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,723 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-21 00:45:53,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 938 treesize of output 1 [2021-11-21 00:45:53,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,754 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:53,754 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 202 treesize of output 1 [2021-11-21 00:45:53,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,780 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:53,780 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 249 treesize of output 1 [2021-11-21 00:45:53,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,812 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:53,812 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 142 treesize of output 1 [2021-11-21 00:45:53,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,829 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:53,829 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 193 treesize of output 1 [2021-11-21 00:45:53,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:53,862 INFO L354 Elim1Store]: treesize reduction 52, result has 32.5 percent of original size [2021-11-21 00:45:53,862 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 584 treesize of output 430 [2021-11-21 00:45:54,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,016 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,016 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 142 treesize of output 1 [2021-11-21 00:45:54,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,052 INFO L354 Elim1Store]: treesize reduction 51, result has 33.8 percent of original size [2021-11-21 00:45:54,053 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 374 treesize of output 281 [2021-11-21 00:45:54,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,107 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:54,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 424 treesize of output 1 [2021-11-21 00:45:54,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,174 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:54,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1219 treesize of output 1 [2021-11-21 00:45:54,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,208 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-21 00:45:54,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 438 treesize of output 1 [2021-11-21 00:45:54,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,255 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,256 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 197 treesize of output 1 [2021-11-21 00:45:54,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,278 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,278 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 197 treesize of output 1 [2021-11-21 00:45:54,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,308 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,326 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 567 treesize of output 1 [2021-11-21 00:45:54,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,338 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,338 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-21 00:45:54,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,359 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,360 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 567 treesize of output 1 [2021-11-21 00:45:54,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,372 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,372 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 248 treesize of output 1 [2021-11-21 00:45:54,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,386 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,387 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 248 treesize of output 1 [2021-11-21 00:45:54,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,405 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,406 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 197 treesize of output 1 [2021-11-21 00:45:54,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,421 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,422 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 197 treesize of output 1 [2021-11-21 00:45:54,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,437 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,437 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 440 treesize of output 1 [2021-11-21 00:45:54,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,456 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,456 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 197 treesize of output 1 [2021-11-21 00:45:54,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,472 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,472 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 440 treesize of output 1 [2021-11-21 00:45:54,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,508 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,509 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 197 treesize of output 1 [2021-11-21 00:45:54,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,526 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,526 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 440 treesize of output 1 [2021-11-21 00:45:54,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,543 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,544 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 197 treesize of output 1 [2021-11-21 00:45:54,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,572 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,573 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 567 treesize of output 1 [2021-11-21 00:45:54,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,601 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,602 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 248 treesize of output 1 [2021-11-21 00:45:54,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,641 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,641 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 567 treesize of output 1 [2021-11-21 00:45:54,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,657 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,658 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 248 treesize of output 1 [2021-11-21 00:45:54,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,692 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:54,693 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 567 treesize of output 1 [2021-11-21 00:45:54,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,706 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,706 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 248 treesize of output 1 [2021-11-21 00:45:54,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,721 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,722 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 248 treesize of output 1 [2021-11-21 00:45:54,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,736 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,737 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 248 treesize of output 1 [2021-11-21 00:45:54,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,757 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:54,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 956 treesize of output 1 [2021-11-21 00:45:54,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,802 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,802 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 202 treesize of output 1 [2021-11-21 00:45:54,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,859 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,860 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 150 treesize of output 1 [2021-11-21 00:45:54,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,894 INFO L354 Elim1Store]: treesize reduction 69, result has 10.4 percent of original size [2021-11-21 00:45:54,895 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 337 treesize of output 238 [2021-11-21 00:45:54,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,928 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,928 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 150 treesize of output 1 [2021-11-21 00:45:54,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:54,951 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:54,951 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 216 treesize of output 1 [2021-11-21 00:45:55,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,016 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:55,016 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 567 treesize of output 1 [2021-11-21 00:45:55,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,034 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,034 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 248 treesize of output 1 [2021-11-21 00:45:55,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,065 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:55,065 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 567 treesize of output 1 [2021-11-21 00:45:55,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,083 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,084 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 248 treesize of output 1 [2021-11-21 00:45:55,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,104 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,105 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 248 treesize of output 1 [2021-11-21 00:45:55,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,149 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,149 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 197 treesize of output 1 [2021-11-21 00:45:55,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,174 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,174 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 197 treesize of output 1 [2021-11-21 00:45:55,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,201 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:55,201 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 440 treesize of output 1 [2021-11-21 00:45:55,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,225 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,226 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 197 treesize of output 1 [2021-11-21 00:45:55,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,244 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:55,244 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 440 treesize of output 1 [2021-11-21 00:45:55,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,291 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-21 00:45:55,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 575 treesize of output 1 [2021-11-21 00:45:55,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,358 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:55,358 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 354 treesize of output 1 [2021-11-21 00:45:55,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,375 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,375 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 95 treesize of output 1 [2021-11-21 00:45:55,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,464 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:55,465 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 481 treesize of output 1 [2021-11-21 00:45:55,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,492 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,493 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 146 treesize of output 1 [2021-11-21 00:45:55,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,516 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,517 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 95 treesize of output 1 [2021-11-21 00:45:55,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,547 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:55,547 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 271 treesize of output 1 [2021-11-21 00:45:55,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,566 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,567 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 95 treesize of output 1 [2021-11-21 00:45:55,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,592 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:55,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 321 treesize of output 1 [2021-11-21 00:45:55,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,682 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-21 00:45:55,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 954 treesize of output 1 [2021-11-21 00:45:55,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,733 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:55,734 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 614 treesize of output 1 [2021-11-21 00:45:55,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:55,811 INFO L354 Elim1Store]: treesize reduction 55, result has 6.8 percent of original size [2021-11-21 00:45:55,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 525 treesize of output 409 [2021-11-21 00:45:56,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,068 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,068 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 45 treesize of output 1 [2021-11-21 00:45:56,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,086 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 1 [2021-11-21 00:45:56,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,132 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,133 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 97 treesize of output 1 [2021-11-21 00:45:56,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,156 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 255 treesize of output 1 [2021-11-21 00:45:56,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,174 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,174 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 45 treesize of output 1 [2021-11-21 00:45:56,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:56,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,253 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,253 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 112 treesize of output 1 [2021-11-21 00:45:56,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,292 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,293 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 93 treesize of output 1 [2021-11-21 00:45:56,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,319 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 1 [2021-11-21 00:45:56,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,337 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,337 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 93 treesize of output 1 [2021-11-21 00:45:56,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,383 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:56,383 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 231 treesize of output 1 [2021-11-21 00:45:56,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,394 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,394 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 93 treesize of output 1 [2021-11-21 00:45:56,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,422 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,422 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 144 treesize of output 1 [2021-11-21 00:45:56,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,437 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,437 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 144 treesize of output 1 [2021-11-21 00:45:56,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,451 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-21 00:45:56,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,468 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,469 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 144 treesize of output 1 [2021-11-21 00:45:56,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,484 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:56,484 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 358 treesize of output 1 [2021-11-21 00:45:56,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,501 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,501 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 45 treesize of output 1 [2021-11-21 00:45:56,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,517 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,517 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 45 treesize of output 1 [2021-11-21 00:45:56,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,531 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 1 [2021-11-21 00:45:56,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,546 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,546 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 45 treesize of output 1 [2021-11-21 00:45:56,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,565 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,565 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 93 treesize of output 1 [2021-11-21 00:45:56,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,587 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,587 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 93 treesize of output 1 [2021-11-21 00:45:56,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,618 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,619 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 93 treesize of output 1 [2021-11-21 00:45:56,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,644 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 1 [2021-11-21 00:45:56,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,657 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,657 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 93 treesize of output 1 [2021-11-21 00:45:56,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,678 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:56,679 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 231 treesize of output 1 [2021-11-21 00:45:56,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,691 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,691 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 93 treesize of output 1 [2021-11-21 00:45:56,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,706 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,706 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 93 treesize of output 1 [2021-11-21 00:45:56,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,728 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,728 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 144 treesize of output 1 [2021-11-21 00:45:56,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,746 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,746 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 144 treesize of output 1 [2021-11-21 00:45:56,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,764 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-21 00:45:56,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,785 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,785 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 144 treesize of output 1 [2021-11-21 00:45:56,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,801 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:56,801 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 358 treesize of output 1 [2021-11-21 00:45:56,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,824 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 1 [2021-11-21 00:45:56,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,837 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,837 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 93 treesize of output 1 [2021-11-21 00:45:56,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,860 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,861 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 144 treesize of output 1 [2021-11-21 00:45:56,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,879 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,879 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 144 treesize of output 1 [2021-11-21 00:45:56,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,900 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,900 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 144 treesize of output 1 [2021-11-21 00:45:56,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,915 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-21 00:45:56,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,934 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,934 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 144 treesize of output 1 [2021-11-21 00:45:56,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,949 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-21 00:45:56,950 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 358 treesize of output 1 [2021-11-21 00:45:56,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,969 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:56,969 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 144 treesize of output 1 [2021-11-21 00:45:56,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:56,985 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-21 00:45:56,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-21 00:45:57,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:57,012 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 00:45:57,013 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 45 treesize of output 1 [2021-11-21 00:45:57,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:57,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:57,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:57,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:57,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398533884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:45:57,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748875090] [2021-11-21 00:45:57,429 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:45:57,429 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:45:57,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:45:57,429 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:45:57,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:45:57,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:57,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:57,823 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:45:57,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:45:57,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:57,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:57,917 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:45:57,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:45:58,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,061 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 61 treesize of output 73 [2021-11-21 00:45:58,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:58,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:58,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:58,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:58,215 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-21 00:45:58,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 332 treesize of output 348 [2021-11-21 00:45:58,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:58,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:58,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:58,586 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:45:58,586 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:45:59,369 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:45:59,460 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:46:00,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:46:00,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:46:00,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2021-11-21 00:46:00,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849596549] [2021-11-21 00:46:00,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:46:00,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-21 00:46:00,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-21 00:46:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 00:46:00,258 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:46:01,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:01,374 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2021-11-21 00:46:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-21 00:46:01,375 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-11-21 00:46:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:01,376 INFO L225 Difference]: With dead ends: 69 [2021-11-21 00:46:01,376 INFO L226 Difference]: Without dead ends: 67 [2021-11-21 00:46:01,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=376, Invalid=3046, Unknown=0, NotChecked=0, Total=3422 [2021-11-21 00:46:01,378 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:01,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 145 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 347 Invalid, 0 Unknown, 77 Unchecked, 0.3s Time] [2021-11-21 00:46:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-21 00:46:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 28. [2021-11-21 00:46:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:46:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-21 00:46:01,388 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 24 [2021-11-21 00:46:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:01,389 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-21 00:46:01,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:46:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-21 00:46:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:46:01,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:01,390 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:46:01,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:46:01,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:01,590 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:46:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash -175692323, now seen corresponding path program 7 times [2021-11-21 00:46:01,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:01,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907585421] [2021-11-21 00:46:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:01,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:46:01,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:01,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907585421] [2021-11-21 00:46:01,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907585421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:46:01,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45936781] [2021-11-21 00:46:01,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:46:01,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:01,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:46:01,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:46:01,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:46:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:01,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:46:01,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:46:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:46:01,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:46:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:46:01,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45936781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:46:01,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1978441466] [2021-11-21 00:46:01,988 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:46:01,988 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:46:01,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:46:01,989 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:46:01,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:46:02,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,413 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:46:02,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:46:02,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,500 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:46:02,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:46:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 59 [2021-11-21 00:46:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:02,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:02,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:02,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:02,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:02,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:02,859 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-21 00:46:02,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 316 treesize of output 344 [2021-11-21 00:46:03,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:03,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:03,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:03,469 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:46:03,470 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:46:04,284 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:46:04,374 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:46:04,960 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:46:04,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:46:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2021-11-21 00:46:04,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164365889] [2021-11-21 00:46:04,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:46:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 00:46:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 00:46:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:46:04,962 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:46:05,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:05,057 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-11-21 00:46:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:46:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-21 00:46:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:05,059 INFO L225 Difference]: With dead ends: 55 [2021-11-21 00:46:05,059 INFO L226 Difference]: Without dead ends: 37 [2021-11-21 00:46:05,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2021-11-21 00:46:05,061 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:05,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 57 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:46:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-21 00:46:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-11-21 00:46:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:46:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-21 00:46:05,070 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 26 [2021-11-21 00:46:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:05,070 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-21 00:46:05,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:46:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-21 00:46:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 00:46:05,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:05,071 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:46:05,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:46:05,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:46:05,278 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:46:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash 214951445, now seen corresponding path program 8 times [2021-11-21 00:46:05,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:05,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600978063] [2021-11-21 00:46:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:05,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:46:05,837 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:05,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600978063] [2021-11-21 00:46:05,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600978063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:46:05,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875539332] [2021-11-21 00:46:05,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:46:05,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:05,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:46:05,839 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:46:05,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:46:05,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-21 00:46:05,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:46:05,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-21 00:46:05,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:46:06,020 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 00:46:06,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:06,157 INFO L354 Elim1Store]: treesize reduction 51, result has 19.0 percent of original size [2021-11-21 00:46:06,157 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 2 case distinctions, treesize of input 36 treesize of output 43 [2021-11-21 00:46:06,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:06,254 INFO L354 Elim1Store]: treesize reduction 341, result has 9.8 percent of original size [2021-11-21 00:46:06,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 107 [2021-11-21 00:46:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:46:06,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:46:07,287 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:46:07,289 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 11873322 treesize of output 10890290 [2021-11-21 00:46:16,387 WARN L227 SmtUtils]: Spent 9.10s on a formula simplification that was a NOOP. DAG size: 819 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:46:16,593 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:46:16,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [290256221] [2021-11-21 00:46:16,596 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:46:16,596 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:46:16,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:46:16,596 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:46:16,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:46:16,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:16,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:16,962 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:46:16,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:46:17,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,055 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:46:17,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:46:17,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,172 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 61 treesize of output 73 [2021-11-21 00:46:17,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:17,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:17,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:17,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:17,327 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-21 00:46:17,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 332 treesize of output 348 [2021-11-21 00:46:17,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:17,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:17,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:17,623 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:46:17,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:46:18,378 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:46:18,455 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:46:19,194 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:46:19,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:46:19,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-21 00:46:19,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875097112] [2021-11-21 00:46:19,194 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:46:19,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:46:19,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:46:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-11-21 00:46:19,196 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:46:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:19,877 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-11-21 00:46:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:46:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-21 00:46:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:19,878 INFO L225 Difference]: With dead ends: 73 [2021-11-21 00:46:19,878 INFO L226 Difference]: Without dead ends: 71 [2021-11-21 00:46:19,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=270, Invalid=2382, Unknown=0, NotChecked=0, Total=2652 [2021-11-21 00:46:19,880 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:19,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 107 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:46:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-21 00:46:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 29. [2021-11-21 00:46:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:46:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-21 00:46:19,891 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 26 [2021-11-21 00:46:19,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:19,891 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-21 00:46:19,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:46:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-21 00:46:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 00:46:19,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:19,892 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:46:19,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:46:20,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:20,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:46:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 10296594, now seen corresponding path program 9 times [2021-11-21 00:46:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:20,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693014977] [2021-11-21 00:46:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:20,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:46:20,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:20,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693014977] [2021-11-21 00:46:20,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693014977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:46:20,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220977194] [2021-11-21 00:46:20,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:46:20,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:20,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:46:20,532 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:46:20,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:46:20,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:46:20,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:46:20,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-21 00:46:20,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:46:20,612 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 00:46:20,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,700 INFO L354 Elim1Store]: treesize reduction 68, result has 17.1 percent of original size [2021-11-21 00:46:20,701 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 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:46:20,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:20,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 91 [2021-11-21 00:46:21,599 INFO L354 Elim1Store]: treesize reduction 442, result has 1.6 percent of original size [2021-11-21 00:46:21,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 106 treesize of output 48 [2021-11-21 00:46:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:46:21,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:46:21,928 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:46:21,929 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 37521882 treesize of output 34376162 [2021-11-21 00:46:50,669 WARN L227 SmtUtils]: Spent 28.74s on a formula simplification that was a NOOP. DAG size: 857 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:46:50,919 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:46:50,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1643998804] [2021-11-21 00:46:50,921 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 00:46:50,921 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:46:50,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:46:50,921 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:46:50,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:46:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,300 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-21 00:46:51,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-21 00:46:51,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,410 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-21 00:46:51,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-21 00:46:51,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 73 [2021-11-21 00:46:51,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:51,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:51,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:51,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:51,722 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-21 00:46:51,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 332 treesize of output 348 [2021-11-21 00:46:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:51,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:51,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:46:51,984 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-21 00:46:51,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-21 00:46:52,619 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 49 for LOIs [2021-11-21 00:46:52,698 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:46:53,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:46:53,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:46:53,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-21 00:46:53,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444341880] [2021-11-21 00:46:53,487 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:46:53,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:46:53,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:53,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:46:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1412, Unknown=0, NotChecked=0, Total=1560 [2021-11-21 00:46:53,489 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:46:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:54,033 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-11-21 00:46:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 00:46:54,033 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-21 00:46:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:54,034 INFO L225 Difference]: With dead ends: 47 [2021-11-21 00:46:54,034 INFO L226 Difference]: Without dead ends: 45 [2021-11-21 00:46:54,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=213, Invalid=2043, Unknown=0, NotChecked=0, Total=2256 [2021-11-21 00:46:54,035 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:54,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:46:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-21 00:46:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2021-11-21 00:46:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:46:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-21 00:46:54,046 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2021-11-21 00:46:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:54,046 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-21 00:46:54,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:46:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-21 00:46:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 00:46:54,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:54,048 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:46:54,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:46:54,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:54,262 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:46:54,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash 400940362, now seen corresponding path program 10 times [2021-11-21 00:46:54,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:54,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541157797] [2021-11-21 00:46:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:54,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:46:54,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:54,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541157797] [2021-11-21 00:46:54,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541157797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:46:54,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321575494] [2021-11-21 00:46:54,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:46:54,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:46:54,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:46:54,723 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:46:54,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73485234-7270-4399-8ed4-579e075b0bef/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 00:46:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:54,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-21 00:46:54,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:46:54,807 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 00:46:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:54,894 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-21 00:46:54,895 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 2 case distinctions, treesize of input 62 treesize of output 68 [2021-11-21 00:46:54,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:55,010 INFO L354 Elim1Store]: treesize reduction 396, result has 9.6 percent of original size [2021-11-21 00:46:55,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 131 [2021-11-21 00:46:55,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:46:55,212 INFO L354 Elim1Store]: treesize reduction 884, result has 7.1 percent of original size [2021-11-21 00:46:55,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 26 case distinctions, treesize of input 162 treesize of output 192 [2021-11-21 00:46:57,185 INFO L354 Elim1Store]: treesize reduction 1538, result has 0.5 percent of original size [2021-11-21 00:46:57,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 181 treesize of output 69 [2021-11-21 00:46:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:46:57,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:47:08,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:47:08,057 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 1631794928924847 treesize of output 1484900604950711