./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn4.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_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/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_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/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_4a4d1e27-794c-446e-9003-f0b734575ba3/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 7bfa83e4265de8b9a1bd21dc33b28b63f68994b9952943e0726905cc1e10334a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:30:37,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:30:37,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:30:37,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:30:37,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:30:37,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:30:37,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:30:37,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:30:37,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:30:37,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:30:37,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:30:37,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:30:37,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:30:37,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:30:37,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:30:37,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:30:37,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:30:37,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:30:37,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:30:37,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:30:37,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:30:37,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:30:37,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:30:37,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:30:38,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:30:38,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:30:38,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:30:38,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:30:38,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:30:38,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:30:38,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:30:38,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:30:38,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:30:38,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:30:38,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:30:38,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:30:38,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:30:38,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:30:38,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:30:38,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:30:38,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:30:38,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:30:38,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:30:38,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:30:38,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:30:38,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:30:38,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:30:38,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:30:38,070 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:30:38,071 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:30:38,071 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:30:38,071 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:30:38,072 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:30:38,072 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:30:38,073 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:30:38,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:30:38,073 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:30:38,073 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:30:38,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:30:38,074 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:30:38,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:30:38,076 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:30:38,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:30:38,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:30:38,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:30:38,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:30:38,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:30:38,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:30:38,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:30:38,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:30:38,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:30:38,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:30:38,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:30:38,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:30:38,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:38,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:30:38,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:30:38,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:30:38,082 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:30:38,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:30:38,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:30:38,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:30:38,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:30:38,083 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_4a4d1e27-794c-446e-9003-f0b734575ba3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bfa83e4265de8b9a1bd21dc33b28b63f68994b9952943e0726905cc1e10334a [2021-11-21 01:30:38,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:30:38,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:30:38,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:30:38,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:30:38,459 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:30:38,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-fpi/eqn4.c [2021-11-21 01:30:38,581 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/data/a2b7e67cf/783f8f7ab5494a28a3d0f97c4e3246c9/FLAG434c56a70 [2021-11-21 01:30:39,118 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:30:39,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/sv-benchmarks/c/array-fpi/eqn4.c [2021-11-21 01:30:39,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/data/a2b7e67cf/783f8f7ab5494a28a3d0f97c4e3246c9/FLAG434c56a70 [2021-11-21 01:30:39,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/data/a2b7e67cf/783f8f7ab5494a28a3d0f97c4e3246c9 [2021-11-21 01:30:39,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:30:39,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:30:39,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:39,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:30:39,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:30:39,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560c406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39, skipping insertion in model container [2021-11-21 01:30:39,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:30:39,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:30:39,692 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_4a4d1e27-794c-446e-9003-f0b734575ba3/sv-benchmarks/c/array-fpi/eqn4.c[587,600] [2021-11-21 01:30:39,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:39,745 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:30:39,767 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_4a4d1e27-794c-446e-9003-f0b734575ba3/sv-benchmarks/c/array-fpi/eqn4.c[587,600] [2021-11-21 01:30:39,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:39,810 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:30:39,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39 WrapperNode [2021-11-21 01:30:39,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:39,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:39,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:30:39,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:30:39,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,881 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2021-11-21 01:30:39,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:39,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:30:39,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:30:39,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:30:39,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:30:39,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:30:39,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:30:39,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:30:39,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (1/1) ... [2021-11-21 01:30:39,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:39,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:39,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:30:40,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:30:40,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:30:40,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:30:40,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:30:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:30:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:30:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:30:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:30:40,137 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:30:40,140 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:30:40,324 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:30:40,383 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:30:40,383 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:30:40,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:40 BoogieIcfgContainer [2021-11-21 01:30:40,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:30:40,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:30:40,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:30:40,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:30:40,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:30:39" (1/3) ... [2021-11-21 01:30:40,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed4fbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:40, skipping insertion in model container [2021-11-21 01:30:40,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:39" (2/3) ... [2021-11-21 01:30:40,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed4fbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:40, skipping insertion in model container [2021-11-21 01:30:40,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:40" (3/3) ... [2021-11-21 01:30:40,397 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn4.c [2021-11-21 01:30:40,403 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:30:40,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:30:40,458 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:30:40,467 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 01:30:40,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:30:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:30:40,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:40,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:40,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -794748304, now seen corresponding path program 1 times [2021-11-21 01:30:40,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:40,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688902820] [2021-11-21 01:30:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:40,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:40,615 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:30:40,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648868438] [2021-11-21 01:30:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:40,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:40,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:40,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:40,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:30:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:40,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:30:40,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:40,844 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-21 01:30:40,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:30:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:41,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:30:41,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:41,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688902820] [2021-11-21 01:30:41,061 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:30:41,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648868438] [2021-11-21 01:30:41,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648868438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:41,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:41,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:30:41,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994104818] [2021-11-21 01:30:41,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:41,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:30:41,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:30:41,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:30:41,115 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:41,358 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-11-21 01:30:41,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:30:41,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:30:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:41,369 INFO L225 Difference]: With dead ends: 35 [2021-11-21 01:30:41,369 INFO L226 Difference]: Without dead ends: 20 [2021-11-21 01:30:41,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:30:41,377 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:41,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 19 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:30:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-21 01:30:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2021-11-21 01:30:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:41,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-11-21 01:30:41,416 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2021-11-21 01:30:41,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:41,416 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-21 01:30:41,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-11-21 01:30:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:30:41,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:41,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:41,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:41,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 01:30:41,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:41,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1127926275, now seen corresponding path program 1 times [2021-11-21 01:30:41,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:41,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384501828] [2021-11-21 01:30:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:41,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:41,679 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:30:41,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575815925] [2021-11-21 01:30:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:41,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:41,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:41,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:41,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:30:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:41,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:41,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:41,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:30:41,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:41,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384501828] [2021-11-21 01:30:41,787 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:30:41,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575815925] [2021-11-21 01:30:41,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575815925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:41,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:41,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:30:41,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444063181] [2021-11-21 01:30:41,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:41,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:30:41,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:41,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:30:41,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:30:41,791 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:41,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:41,843 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-11-21 01:30:41,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:30:41,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:30:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:41,845 INFO L225 Difference]: With dead ends: 25 [2021-11-21 01:30:41,845 INFO L226 Difference]: Without dead ends: 19 [2021-11-21 01:30:41,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:30:41,848 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:41,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-21 01:30:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-11-21 01:30:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-21 01:30:41,859 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-11-21 01:30:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:41,860 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-21 01:30:41,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-11-21 01:30:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:30:41,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:41,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:41,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:42,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 01:30:42,062 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:42,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 849022933, now seen corresponding path program 1 times [2021-11-21 01:30:42,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:42,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643296046] [2021-11-21 01:30:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:42,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:42,101 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:30:42,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160465916] [2021-11-21 01:30:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:42,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:42,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:42,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:30:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:42,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:30:42,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:42,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:42,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643296046] [2021-11-21 01:30:42,289 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:30:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160465916] [2021-11-21 01:30:42,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160465916] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:42,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [402951285] [2021-11-21 01:30:42,309 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:30:42,315 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:42,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:42,338 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:42,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:42,668 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:30:42,669 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 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:30:42,912 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:30:42,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:30:43,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 30 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 105 [2021-11-21 01:30:43,402 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:43,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:30:43,477 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:43,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,736 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:30:43,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 334 [2021-11-21 01:30:43,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 65 [2021-11-21 01:30:43,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 65 [2021-11-21 01:30:43,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,973 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:30:43,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 133 [2021-11-21 01:30:44,150 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:44,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:44,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:30:44,687 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:30:45,041 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:30:45,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:30:45,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-21 01:30:45,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425097667] [2021-11-21 01:30:45,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:45,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:30:45,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:30:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:30:45,044 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:45,141 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-21 01:30:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:30:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:30:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:45,147 INFO L225 Difference]: With dead ends: 29 [2021-11-21 01:30:45,147 INFO L226 Difference]: Without dead ends: 24 [2021-11-21 01:30:45,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:30:45,149 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:45,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-21 01:30:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2021-11-21 01:30:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-21 01:30:45,155 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2021-11-21 01:30:45,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:45,156 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-21 01:30:45,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-21 01:30:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:30:45,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:45,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:45,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:45,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:45,378 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:30:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 545227070, now seen corresponding path program 1 times [2021-11-21 01:30:45,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:45,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940401290] [2021-11-21 01:30:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:45,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:45,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:30:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226334279] [2021-11-21 01:30:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:45,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:45,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:45,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:30:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:45,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-21 01:30:45,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:45,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-21 01:30:45,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:30:45,569 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-21 01:30:45,569 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 1 case distinctions, treesize of input 34 treesize of output 32 [2021-11-21 01:30:45,670 INFO L354 Elim1Store]: treesize reduction 124, result has 16.2 percent of original size [2021-11-21 01:30:45,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 48 [2021-11-21 01:30:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:45,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:46,738 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:46,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940401290] [2021-11-21 01:30:46,739 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:30:46,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226334279] [2021-11-21 01:30:46,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226334279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:46,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [766052510] [2021-11-21 01:30:46,744 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:30:46,745 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:46,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:46,745 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:46,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:46,912 INFO L354 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2021-11-21 01:30:46,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2021-11-21 01:30:47,147 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:30:47,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:30:47,247 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 01:30:47,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 13 select indices, 13 select index equivalence classes, 32 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 571 [2021-11-21 01:30:47,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 29 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 131 [2021-11-21 01:30:47,848 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:47,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:47,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 29 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 134 [2021-11-21 01:30:48,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 29 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 122 [2021-11-21 01:30:48,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:48,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:48,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:48,584 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-11-21 01:30:48,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 18 new quantified variables, introduced 55 case distinctions, treesize of input 613 treesize of output 931 [2021-11-21 01:30:49,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:49,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:49,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:49,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:49,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:49,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:49,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:49,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:49,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 33 disjoint index pairs (out of 105 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 321 treesize of output 192 [2021-11-21 01:30:49,391 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:50,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:50,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:50,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 32 disjoint index pairs (out of 105 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 353 treesize of output 212 [2021-11-21 01:30:50,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:51,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:51,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:51,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:51,846 INFO L354 Elim1Store]: treesize reduction 179, result has 7.3 percent of original size [2021-11-21 01:30:51,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 53 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 61 case distinctions, treesize of input 700 treesize of output 566 [2021-11-21 01:30:55,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:55,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:55,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:55,427 INFO L354 Elim1Store]: treesize reduction 164, result has 15.0 percent of original size [2021-11-21 01:30:55,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 53 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 69 case distinctions, treesize of input 788 treesize of output 564 [2021-11-21 01:30:56,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:56,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:30:56,887 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:57,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,005 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:30:57,006 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 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-21 01:30:57,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,175 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:30:57,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 268 treesize of output 472 [2021-11-21 01:30:57,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,439 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:30:57,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 194 treesize of output 117 [2021-11-21 01:30:57,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,657 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:30:57,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 353 treesize of output 230 [2021-11-21 01:30:57,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,787 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:30:57,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 270 treesize of output 156 [2021-11-21 01:30:57,953 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:30:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:57,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:57,976 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:30:57,982 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:30:58,382 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:30:58,667 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:30:58,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:30:58,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-11-21 01:30:58,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145770794] [2021-11-21 01:30:58,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:58,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:30:58,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:30:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:30:58,669 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:01,345 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2021-11-21 01:31:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 01:31:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:31:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:01,348 INFO L225 Difference]: With dead ends: 54 [2021-11-21 01:31:01,349 INFO L226 Difference]: Without dead ends: 52 [2021-11-21 01:31:01,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056 [2021-11-21 01:31:01,351 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:01,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 123 Invalid, 0 Unknown, 67 Unchecked, 0.8s Time] [2021-11-21 01:31:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-21 01:31:01,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 24. [2021-11-21 01:31:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2021-11-21 01:31:01,359 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 9 [2021-11-21 01:31:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:01,360 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2021-11-21 01:31:01,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2021-11-21 01:31:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:31:01,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:01,361 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:01,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:01,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:01,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:01,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1813092602, now seen corresponding path program 1 times [2021-11-21 01:31:01,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:01,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066666135] [2021-11-21 01:31:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:01,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:01,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:01,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600245235] [2021-11-21 01:31:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:01,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:01,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:01,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:01,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:31:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:01,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:31:01,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:01,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:31:01,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:01,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066666135] [2021-11-21 01:31:01,732 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:01,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600245235] [2021-11-21 01:31:01,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600245235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:01,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:01,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:31:01,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359782983] [2021-11-21 01:31:01,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:01,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:31:01,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:31:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:31:01,735 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:01,798 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-11-21 01:31:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:31:01,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:31:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:01,801 INFO L225 Difference]: With dead ends: 40 [2021-11-21 01:31:01,801 INFO L226 Difference]: Without dead ends: 30 [2021-11-21 01:31:01,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:31:01,805 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:01,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:31:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-21 01:31:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2021-11-21 01:31:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-11-21 01:31:01,823 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2021-11-21 01:31:01,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:01,824 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-11-21 01:31:01,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-11-21 01:31:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:31:01,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:01,825 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:01,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:02,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:02,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:02,042 INFO L85 PathProgramCache]: Analyzing trace with hash -172558306, now seen corresponding path program 2 times [2021-11-21 01:31:02,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:02,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612519316] [2021-11-21 01:31:02,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:02,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:02,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:02,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726888700] [2021-11-21 01:31:02,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:31:02,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:02,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:02,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:02,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:31:02,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:31:02,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:31:02,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:31:02,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:02,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:02,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:02,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612519316] [2021-11-21 01:31:02,356 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:02,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726888700] [2021-11-21 01:31:02,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726888700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:02,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571245866] [2021-11-21 01:31:02,359 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:31:02,359 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:31:02,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:31:02,360 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:31:02,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:31:02,549 INFO L354 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2021-11-21 01:31:02,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2021-11-21 01:31:02,736 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:31:02,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:31:02,813 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 01:31:02,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:02,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:02,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:02,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:02,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:02,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:02,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:02,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 13 select indices, 13 select index equivalence classes, 33 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 571 [2021-11-21 01:31:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 30 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 132 [2021-11-21 01:31:03,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 30 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 142 [2021-11-21 01:31:03,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 30 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 110 [2021-11-21 01:31:03,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:03,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:03,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:03,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,036 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-11-21 01:31:04,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 14 select indices, 14 select index equivalence classes, 63 disjoint index pairs (out of 91 index pairs), introduced 18 new quantified variables, introduced 55 case distinctions, treesize of input 609 treesize of output 927 [2021-11-21 01:31:04,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:04,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:04,341 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:04,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 31 disjoint index pairs (out of 105 index pairs), introduced 14 new quantified variables, introduced 5 case distinctions, treesize of input 323 treesize of output 193 [2021-11-21 01:31:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:04,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:04,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 34 disjoint index pairs (out of 105 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 193 [2021-11-21 01:31:07,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:07,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:07,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:07,318 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-11-21 01:31:07,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 53 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 61 case distinctions, treesize of input 763 treesize of output 581 [2021-11-21 01:31:08,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:08,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:08,221 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-11-21 01:31:08,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 53 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 61 case distinctions, treesize of input 623 treesize of output 474 [2021-11-21 01:31:09,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:09,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:31:09,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:09,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:09,774 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:09,774 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 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-21 01:31:09,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:09,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:09,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:09,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:09,944 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:31:09,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 268 treesize of output 472 [2021-11-21 01:31:10,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,092 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:31:10,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 192 treesize of output 115 [2021-11-21 01:31:10,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,322 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:31:10,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 307 treesize of output 166 [2021-11-21 01:31:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,430 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:31:10,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 252 treesize of output 142 [2021-11-21 01:31:10,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:10,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:10,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:10,588 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:10,588 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:31:10,928 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:31:11,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:31:11,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:31:11,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-21 01:31:11,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931596286] [2021-11-21 01:31:11,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:31:11,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:31:11,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:31:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:31:11,160 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:11,337 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2021-11-21 01:31:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:31:11,338 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:31:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:11,339 INFO L225 Difference]: With dead ends: 65 [2021-11-21 01:31:11,339 INFO L226 Difference]: Without dead ends: 47 [2021-11-21 01:31:11,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:31:11,341 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:11,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 37 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:31:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-21 01:31:11,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-21 01:31:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-21 01:31:11,349 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 11 [2021-11-21 01:31:11,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:11,349 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-21 01:31:11,349 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-21 01:31:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:31:11,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:11,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:11,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-21 01:31:11,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:11,566 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1910697616, now seen corresponding path program 3 times [2021-11-21 01:31:11,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:11,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525747399] [2021-11-21 01:31:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:11,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:11,606 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:11,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082500043] [2021-11-21 01:31:11,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:31:11,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:11,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:11,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:11,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:31:11,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:31:11,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:31:11,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 01:31:11,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:11,809 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-21 01:31:11,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:31:11,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-21 01:31:11,861 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-21 01:31:11,861 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 1 case distinctions, treesize of input 34 treesize of output 32 [2021-11-21 01:31:11,934 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-21 01:31:11,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 44 [2021-11-21 01:31:12,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:12,040 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 01:31:12,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 56 [2021-11-21 01:31:12,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:12,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:12,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:12,160 INFO L354 Elim1Store]: treesize reduction 220, result has 10.6 percent of original size [2021-11-21 01:31:12,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 81 treesize of output 74 [2021-11-21 01:31:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:12,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:19,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:19,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525747399] [2021-11-21 01:31:19,270 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:19,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082500043] [2021-11-21 01:31:19,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082500043] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:19,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1386966307] [2021-11-21 01:31:19,273 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:31:19,273 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:31:19,273 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:31:19,273 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:31:19,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:31:19,451 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:31:19,452 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 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:31:19,570 INFO L354 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2021-11-21 01:31:19,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2021-11-21 01:31:19,805 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:31:19,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:31:19,871 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:31:19,873 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:31:19,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:19,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:31:19,945 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:20,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,058 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:31:20,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 334 [2021-11-21 01:31:20,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 64 [2021-11-21 01:31:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 65 [2021-11-21 01:31:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 80 [2021-11-21 01:31:20,417 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:20,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:31:20,455 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:20,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,588 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:20,588 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 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-21 01:31:20,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,772 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:31:20,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 268 treesize of output 472 [2021-11-21 01:31:20,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,929 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:31:20,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 196 treesize of output 126 [2021-11-21 01:31:20,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:20,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:20,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:21,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:21,017 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:31:21,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 334 treesize of output 173 [2021-11-21 01:31:21,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:21,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:21,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:21,137 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:31:21,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 206 treesize of output 135 [2021-11-21 01:31:21,324 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:21,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:21,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:21,344 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:21,344 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:31:21,368 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:21,661 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:31:22,106 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:31:22,107 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:31:22,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-11-21 01:31:22,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415960069] [2021-11-21 01:31:22,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:31:22,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:31:22,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:31:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:31:22,108 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:30,732 WARN L227 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 116 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:31:33,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:37,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:31:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:39,441 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2021-11-21 01:31:39,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-21 01:31:39,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:31:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:39,442 INFO L225 Difference]: With dead ends: 50 [2021-11-21 01:31:39,442 INFO L226 Difference]: Without dead ends: 48 [2021-11-21 01:31:39,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:31:39,444 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:39,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 21 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 105 Invalid, 0 Unknown, 42 Unchecked, 5.1s Time] [2021-11-21 01:31:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-21 01:31:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-11-21 01:31:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2021-11-21 01:31:39,451 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 11 [2021-11-21 01:31:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:39,451 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2021-11-21 01:31:39,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2021-11-21 01:31:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:31:39,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:39,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:39,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:39,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 01:31:39,656 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2021672665, now seen corresponding path program 1 times [2021-11-21 01:31:39,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:39,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82355350] [2021-11-21 01:31:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:39,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:39,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:39,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815116523] [2021-11-21 01:31:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:39,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:39,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:39,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:39,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:31:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:39,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:31:39,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:31:39,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:31:39,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:31:39,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82355350] [2021-11-21 01:31:39,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:31:39,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815116523] [2021-11-21 01:31:39,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815116523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:39,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152701249] [2021-11-21 01:31:39,885 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:31:39,885 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:31:39,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:31:39,886 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:31:39,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:31:40,105 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:31:40,105 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 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:31:40,232 INFO L354 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2021-11-21 01:31:40,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2021-11-21 01:31:40,440 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:31:40,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:31:40,527 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:31:40,528 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:31:40,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:31:40,593 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:40,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:31:40,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 334 [2021-11-21 01:31:40,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:40,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 124 [2021-11-21 01:31:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 87 [2021-11-21 01:31:40,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:40,969 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:31:40,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 180 treesize of output 94 [2021-11-21 01:31:41,047 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:41,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:31:41,085 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:41,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,246 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:41,247 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:31:41,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,394 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:41,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 287 treesize of output 515 [2021-11-21 01:31:41,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,642 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:41,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 367 treesize of output 228 [2021-11-21 01:31:41,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,809 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:41,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 349 treesize of output 213 [2021-11-21 01:31:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:41,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:41,899 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:31:41,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 322 treesize of output 184 [2021-11-21 01:31:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:42,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:42,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:42,060 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:42,061 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:31:42,077 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:43,435 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:31:43,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:31:43,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:31:43,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-21 01:31:43,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429221653] [2021-11-21 01:31:43,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:31:43,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:31:43,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:31:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:31:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:31:43,736 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:43,875 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-11-21 01:31:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:31:43,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:31:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:43,876 INFO L225 Difference]: With dead ends: 44 [2021-11-21 01:31:43,877 INFO L226 Difference]: Without dead ends: 35 [2021-11-21 01:31:43,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:31:43,878 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:43,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:31:43,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-21 01:31:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2021-11-21 01:31:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-11-21 01:31:43,885 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2021-11-21 01:31:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:43,885 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-11-21 01:31:43,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-11-21 01:31:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:31:43,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:43,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:43,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-21 01:31:44,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:44,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:31:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash -426879810, now seen corresponding path program 4 times [2021-11-21 01:31:44,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:31:44,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737264102] [2021-11-21 01:31:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:44,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:31:44,116 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:31:44,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845029023] [2021-11-21 01:31:44,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:31:44,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:44,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:44,118 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:44,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:31:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:44,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:31:44,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:44,585 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:31:44,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-21 01:31:44,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-21 01:31:44,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,642 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:44,643 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 1 case distinctions, treesize of input 34 treesize of output 32 [2021-11-21 01:31:44,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:44,730 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:31:44,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 219 treesize of output 361 [2021-11-21 01:31:44,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:44,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 112 [2021-11-21 01:31:44,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 81 [2021-11-21 01:31:44,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:44,969 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:44,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 152 treesize of output 90 [2021-11-21 01:31:45,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,035 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:45,035 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 6 case distinctions, treesize of input 66 treesize of output 60 [2021-11-21 01:31:45,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,227 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-21 01:31:45,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 38 case distinctions, treesize of input 297 treesize of output 567 [2021-11-21 01:31:45,291 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:31:45,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 14 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 424 treesize of output 265 [2021-11-21 01:31:45,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 199 [2021-11-21 01:31:45,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,738 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:31:45,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 262 treesize of output 138 [2021-11-21 01:31:45,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,883 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-21 01:31:45,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 106 treesize of output 88 [2021-11-21 01:31:45,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:45,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:45,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:46,009 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-21 01:31:46,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 117 treesize of output 98 [2021-11-21 01:31:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:46,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:32:42,461 WARN L227 SmtUtils]: Spent 19.86s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:32:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:32:42,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:42,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737264102] [2021-11-21 01:32:42,471 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:32:42,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845029023] [2021-11-21 01:32:42,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845029023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:32:42,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130001666] [2021-11-21 01:32:42,474 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:32:42,474 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:32:42,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:32:42,474 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:32:42,474 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:32:42,739 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:32:42,740 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 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:32:42,906 INFO L354 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2021-11-21 01:32:42,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2021-11-21 01:32:43,194 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:32:43,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:32:43,291 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:32:43,293 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:32:43,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:32:43,380 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:32:43,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,514 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:32:43,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 334 [2021-11-21 01:32:43,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 65 [2021-11-21 01:32:43,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 106 [2021-11-21 01:32:43,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 54 [2021-11-21 01:32:43,843 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:32:43,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:32:43,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:43,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:43,998 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:32:43,999 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:32:44,012 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:32:44,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,149 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:32:44,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 287 treesize of output 515 [2021-11-21 01:32:44,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,597 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:32:44,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 426 treesize of output 274 [2021-11-21 01:32:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,704 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:32:44,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 436 treesize of output 266 [2021-11-21 01:32:44,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,805 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:32:44,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 335 treesize of output 187 [2021-11-21 01:32:44,947 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:32:44,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:44,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:32:44,971 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:32:44,971 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:32:45,263 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:32:46,672 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:32:46,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:32:46,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-11-21 01:32:46,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411097818] [2021-11-21 01:32:46,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:32:46,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 01:32:46,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:46,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 01:32:46,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=492, Unknown=2, NotChecked=0, Total=600 [2021-11-21 01:32:46,675 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 20 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:32:52,841 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse42 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse39 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse50 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse54 (* .cse42 8))) (let ((.cse30 (select .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse54 (- 34359738368)))) (.cse31 (select .cse50 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse54 (- 34359738368)))) (.cse48 (* .cse39 8))) (let ((.cse46 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse48 (- 34359738368))) (.cse49 (+ .cse30 .cse31))) (let ((.cse40 (select .cse50 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse54))) (.cse35 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse32 (store .cse16 .cse46 .cse49)) (.cse47 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48 (- 34359738368)))) (let ((.cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse32) |c_ULTIMATE.start_main_~a~0#1.base|) .cse47)) (.cse36 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse51 (+ 8 .cse31)) (.cse52 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48)) (.cse44 (* .cse35 8)) (.cse53 (+ 8 .cse40))) (let ((.cse27 (store .cse50 .cse47 .cse53)) (.cse20 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse44 (- 34359738368))) (.cse26 (store .cse50 .cse52 .cse53)) (.cse41 (+ 16 .cse40)) (.cse1 (store .cse50 .cse52 .cse51)) (.cse37 (* .cse36 8)) (.cse33 (+ .cse29 .cse30 .cse31)) (.cse2 (store .cse50 .cse47 .cse51)) (.cse43 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse44)) (.cse38 (+ 16 .cse31)) (.cse45 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse44)) (.cse25 (store .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse48) .cse49))) (let ((.cse17 (store .cse25 .cse45 (+ (select .cse25 .cse46) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse25) |c_ULTIMATE.start_main_~a~0#1.base|) .cse47)))) (.cse14 (store .cse2 .cse43 .cse38)) (.cse21 (store .cse32 .cse45 .cse33)) (.cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse37)) (.cse19 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse44 (- 34359738368))) (.cse12 (store .cse1 .cse43 .cse38)) (.cse6 (store .cse26 .cse43 .cse41)) (.cse15 (< 2147483647 .cse35)) (.cse5 (<= .cse36 2147483647)) (.cse0 (< 2147483647 .cse39)) (.cse34 (store .cse26 .cse20 .cse41)) (.cse4 (<= .cse42 2147483647)) (.cse11 (< 2147483647 .cse42)) (.cse23 (store .cse27 .cse20 .cse41)) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37 (- 34359738368))) (.cse8 (+ .cse40 24)) (.cse3 (<= .cse39 2147483647)) (.cse22 (store .cse2 .cse20 .cse38)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37)) (.cse13 (+ .cse31 24)) (.cse9 (< 2147483647 .cse36)) (.cse24 (<= .cse35 2147483647))) (and (or (and (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse3)) .cse4) (or (and (or .cse5 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse6 .cse7 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse9 (and (or .cse0 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse6 .cse10 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse12 .cse10 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4))) (or (= 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse14 .cse10 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse3)))) .cse15) (= 1 (select .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (or (= (select .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse0) (or (and (or .cse0 (= (select (store .cse17 .cse18 (+ (select .cse17 .cse19) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse17) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse3 (= (select (store .cse21 .cse18 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse21) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20) (select .cse21 .cse19))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse15) (or (and (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse23) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11)) .cse24) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse15)) .cse3) (or .cse3 (= (select .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (= (select .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or (and (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse3 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse11) (or (= (select (let ((.cse28 (store .cse32 .cse19 .cse33))) (store .cse28 .cse18 (+ .cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse28) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20) .cse30 .cse31))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse24) (or (and (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11)) .cse15) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse34) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse24)) .cse0) (or (and (or .cse5 (and (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse34 .cse7 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or (and (or (= 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse22 .cse7 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse4) (or .cse11 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse23 .cse7 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse3))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse22 .cse10 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse9)) .cse24)))))))))) is different from false [2021-11-21 01:32:54,853 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse42 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse39 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse50 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse54 (* .cse42 8))) (let ((.cse30 (select .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse54 (- 34359738368)))) (.cse31 (select .cse50 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse54 (- 34359738368)))) (.cse48 (* .cse39 8))) (let ((.cse46 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse48 (- 34359738368))) (.cse49 (+ .cse30 .cse31))) (let ((.cse40 (select .cse50 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse54))) (.cse35 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse32 (store .cse16 .cse46 .cse49)) (.cse47 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48 (- 34359738368)))) (let ((.cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse32) |c_ULTIMATE.start_main_~a~0#1.base|) .cse47)) (.cse36 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse51 (+ 8 .cse31)) (.cse52 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48)) (.cse44 (* .cse35 8)) (.cse53 (+ 8 .cse40))) (let ((.cse27 (store .cse50 .cse47 .cse53)) (.cse20 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse44 (- 34359738368))) (.cse26 (store .cse50 .cse52 .cse53)) (.cse41 (+ 16 .cse40)) (.cse1 (store .cse50 .cse52 .cse51)) (.cse37 (* .cse36 8)) (.cse33 (+ .cse29 .cse30 .cse31)) (.cse2 (store .cse50 .cse47 .cse51)) (.cse43 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse44)) (.cse38 (+ 16 .cse31)) (.cse45 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse44)) (.cse25 (store .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse48) .cse49))) (let ((.cse17 (store .cse25 .cse45 (+ (select .cse25 .cse46) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse25) |c_ULTIMATE.start_main_~a~0#1.base|) .cse47)))) (.cse14 (store .cse2 .cse43 .cse38)) (.cse21 (store .cse32 .cse45 .cse33)) (.cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse37)) (.cse19 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse44 (- 34359738368))) (.cse12 (store .cse1 .cse43 .cse38)) (.cse6 (store .cse26 .cse43 .cse41)) (.cse15 (< 2147483647 .cse35)) (.cse5 (<= .cse36 2147483647)) (.cse0 (< 2147483647 .cse39)) (.cse34 (store .cse26 .cse20 .cse41)) (.cse4 (<= .cse42 2147483647)) (.cse11 (< 2147483647 .cse42)) (.cse23 (store .cse27 .cse20 .cse41)) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37 (- 34359738368))) (.cse8 (+ .cse40 24)) (.cse3 (<= .cse39 2147483647)) (.cse22 (store .cse2 .cse20 .cse38)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37)) (.cse13 (+ .cse31 24)) (.cse9 (< 2147483647 .cse36)) (.cse24 (<= .cse35 2147483647))) (and (or (and (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse3)) .cse4) (or (and (or .cse5 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse6 .cse7 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse9 (and (or .cse0 (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse6 .cse10 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse12 .cse10 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4))) (or (= 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse14 .cse10 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse3)))) .cse15) (= 1 (select .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (or (= (select .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse0) (or (and (or .cse0 (= (select (store .cse17 .cse18 (+ (select .cse17 .cse19) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse17) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse3 (= (select (store .cse21 .cse18 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse21) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20) (select .cse21 .cse19))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse15) (or (and (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse23) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11)) .cse24) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse15)) .cse3) (or .cse3 (= (select .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (= (select .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or (and (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or .cse3 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse11) (or (= (select (let ((.cse28 (store .cse32 .cse19 .cse33))) (store .cse28 .cse18 (+ .cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse28) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20) .cse30 .cse31))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse24) (or (and (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse4) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse11)) .cse15) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse34) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse24)) .cse0) (or (and (or .cse5 (and (or .cse0 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse34 .cse7 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (or (and (or (= 1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse22 .cse7 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse4) (or .cse11 (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse23 .cse7 .cse8)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) .cse3))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse22 .cse10 .cse13)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse9)) .cse24)))))))))) is different from true [2021-11-21 01:34:10,022 WARN L227 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 187 DAG size of output: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:34:24,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:37,689 WARN L227 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 116 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:34:44,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:46,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:47,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:49,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:03,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:05,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:08,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:11,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:16,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:18,008 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-11-21 01:35:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 01:35:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:35:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:18,009 INFO L225 Difference]: With dead ends: 58 [2021-11-21 01:35:18,009 INFO L226 Difference]: Without dead ends: 56 [2021-11-21 01:35:18,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 166.5s TimeCoverageRelationStatistics Valid=287, Invalid=1270, Unknown=7, NotChecked=76, Total=1640 [2021-11-21 01:35:18,011 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 55 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:18,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 195 Invalid, 9 Unknown, 60 Unchecked, 28.5s Time] [2021-11-21 01:35:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-21 01:35:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 33. [2021-11-21 01:35:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 46 transitions. [2021-11-21 01:35:18,021 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 46 transitions. Word has length 13 [2021-11-21 01:35:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:18,022 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 46 transitions. [2021-11-21 01:35:18,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:35:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2021-11-21 01:35:18,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:35:18,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:18,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:18,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:35:18,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:18,229 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:18,229 INFO L85 PathProgramCache]: Analyzing trace with hash -385990150, now seen corresponding path program 2 times [2021-11-21 01:35:18,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:18,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935271534] [2021-11-21 01:35:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:18,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:18,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:35:18,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667979809] [2021-11-21 01:35:18,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:35:18,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:35:18,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:35:18,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:35:18,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:35:18,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:35:18,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:35:18,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 01:35:18,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:35:18,477 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-21 01:35:18,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-11-21 01:35:18,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-21 01:35:18,635 INFO L354 Elim1Store]: treesize reduction 723, result has 13.4 percent of original size [2021-11-21 01:35:18,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 202 treesize of output 279 [2021-11-21 01:35:18,694 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:35:18,734 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:35:18,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 60 [2021-11-21 01:35:18,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:18,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 53 [2021-11-21 01:35:18,795 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-21 01:35:18,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 118 treesize of output 59 [2021-11-21 01:35:18,858 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-21 01:35:18,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 46 [2021-11-21 01:35:19,164 INFO L354 Elim1Store]: treesize reduction 903, result has 9.6 percent of original size [2021-11-21 01:35:19,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 286 treesize of output 469 [2021-11-21 01:35:19,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:19,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 113 [2021-11-21 01:35:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:19,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 272 treesize of output 163 [2021-11-21 01:35:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:35:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:35:19,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 145 [2021-11-21 01:35:19,611 INFO L354 Elim1Store]: treesize reduction 280, result has 13.0 percent of original size [2021-11-21 01:35:19,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 76 [2021-11-21 01:35:20,010 INFO L354 Elim1Store]: treesize reduction 196, result has 0.5 percent of original size [2021-11-21 01:35:20,011 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 102 treesize of output 46 [2021-11-21 01:35:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:35:20,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:36:00,570 WARN L227 SmtUtils]: Spent 18.38s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:36:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:36:00,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935271534] [2021-11-21 01:36:00,581 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:36:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667979809] [2021-11-21 01:36:00,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667979809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:36:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2047290433] [2021-11-21 01:36:00,583 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:36:00,583 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:36:00,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:36:00,583 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:36:00,583 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:36:00,761 INFO L354 Elim1Store]: treesize reduction 66, result has 37.7 percent of original size [2021-11-21 01:36:00,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2021-11-21 01:36:00,940 INFO L354 Elim1Store]: treesize reduction 97, result has 31.2 percent of original size [2021-11-21 01:36:00,941 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 4 case distinctions, treesize of input 29 treesize of output 60 [2021-11-21 01:36:01,174 INFO L354 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2021-11-21 01:36:01,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2021-11-21 01:36:01,258 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:36:01,259 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:36:01,280 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:36:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:36:01,307 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:36:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,459 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:01,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 334 [2021-11-21 01:36:01,529 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:36:01,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 63 [2021-11-21 01:36:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 108 [2021-11-21 01:36:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,780 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:36:01,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 181 treesize of output 84 [2021-11-21 01:36:01,885 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:36:01,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:01,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:36:02,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,069 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:36:02,070 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 1 case distinctions, treesize of input 23 treesize of output 26 [2021-11-21 01:36:02,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,296 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:36:02,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 268 treesize of output 472 [2021-11-21 01:36:02,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,522 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:36:02,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 246 treesize of output 157 [2021-11-21 01:36:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,721 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:36:02,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 18 case distinctions, treesize of input 215 treesize of output 144 [2021-11-21 01:36:02,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,797 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:36:02,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 252 treesize of output 149 [2021-11-21 01:36:02,922 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:36:02,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:36:02,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:36:02,942 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:36:02,942 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 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:36:02,965 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:36:04,197 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:36:06,239 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:36:06,239 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:36:06,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-21 01:36:06,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90705845] [2021-11-21 01:36:06,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:36:06,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:36:06,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:36:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:36:06,241 INFO L87 Difference]: Start difference. First operand 33 states and 46 transitions. Second operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:36:37,971 WARN L227 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 262 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:36:41,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:37:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:02,175 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2021-11-21 01:37:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 01:37:02,181 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 01:37:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:02,182 INFO L225 Difference]: With dead ends: 77 [2021-11-21 01:37:02,182 INFO L226 Difference]: Without dead ends: 75 [2021-11-21 01:37:02,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 79.5s TimeCoverageRelationStatistics Valid=266, Invalid=1374, Unknown=0, NotChecked=0, Total=1640 [2021-11-21 01:37:02,183 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:02,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 69 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 172 Invalid, 1 Unknown, 38 Unchecked, 11.3s Time] [2021-11-21 01:37:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-21 01:37:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 46. [2021-11-21 01:37:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2021-11-21 01:37:02,197 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 14 [2021-11-21 01:37:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:02,198 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2021-11-21 01:37:02,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2021-11-21 01:37:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:37:02,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:02,199 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:02,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:02,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:02,402 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:37:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1968965520, now seen corresponding path program 5 times [2021-11-21 01:37:02,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:02,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525713220] [2021-11-21 01:37:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:02,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:02,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:37:02,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994337415] [2021-11-21 01:37:02,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:37:02,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:02,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:02,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a4d1e27-794c-446e-9003-f0b734575ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 01:37:03,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:37:03,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:37:03,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-21 01:37:03,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:03,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-21 01:37:03,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:37:03,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,760 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:37:03,760 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 1 case distinctions, treesize of input 34 treesize of output 32 [2021-11-21 01:37:03,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,810 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:37:03,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 46 [2021-11-21 01:37:03,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:03,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:37:03,901 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 6 case distinctions, treesize of input 68 treesize of output 60 [2021-11-21 01:37:04,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,020 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:37:04,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 74 [2021-11-21 01:37:04,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,283 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-21 01:37:04,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 106 treesize of output 88 [2021-11-21 01:37:04,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,514 INFO L354 Elim1Store]: treesize reduction 94, result has 16.8 percent of original size [2021-11-21 01:37:04,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 11 select indices, 11 select index equivalence classes, 21 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 57 case distinctions, treesize of input 335 treesize of output 649 [2021-11-21 01:37:04,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:04,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:04,916 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:37:04,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 25 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 35 case distinctions, treesize of input 439 treesize of output 266 [2021-11-21 01:37:05,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 22 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 270 [2021-11-21 01:37:05,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,137 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 01:37:05,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 20 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 308 treesize of output 168 [2021-11-21 01:37:05,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,362 INFO L354 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2021-11-21 01:37:05,362 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 156 treesize of output 118 [2021-11-21 01:37:05,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:05,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:37:07,352 INFO L354 Elim1Store]: treesize reduction 3092, result has 15.2 percent of original size [2021-11-21 01:37:07,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 13 select indices, 13 select index equivalence classes, 10 disjoint index pairs (out of 78 index pairs), introduced 17 new quantified variables, introduced 130 case distinctions, treesize of input 354 treesize of output 726 [2021-11-21 01:37:07,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,518 INFO L354 Elim1Store]: treesize reduction 140, result has 0.7 percent of original size [2021-11-21 01:37:07,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 34 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 9 case distinctions, treesize of input 404 treesize of output 260 [2021-11-21 01:37:07,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:07,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 43 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 404 treesize of output 260 [2021-11-21 01:37:27,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:27,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:37:33,349 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 312 DAG size of output: 184 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:37:33,350 INFO L354 Elim1Store]: treesize reduction 646, result has 41.0 percent of original size [2021-11-21 01:37:33,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 17 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 65 case distinctions, treesize of input 1180 treesize of output 1432