./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ncomp.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_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/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_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ncomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/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_6a99e132-627f-4c53-9c64-b83648371e83/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 c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:13:35,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:13:35,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:13:35,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:13:35,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:13:35,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:13:35,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:13:35,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:13:35,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:13:35,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:13:35,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:13:35,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:13:35,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:13:35,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:13:35,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:13:35,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:13:35,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:13:35,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:13:35,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:13:35,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:13:35,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:13:35,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:13:35,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:13:35,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:13:35,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:13:35,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:13:35,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:13:35,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:13:35,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:13:35,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:13:35,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:13:35,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:13:35,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:13:35,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:13:35,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:13:35,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:13:35,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:13:35,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:13:35,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:13:35,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:13:35,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:13:35,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:13:35,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:13:35,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:13:35,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:13:35,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:13:35,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:13:35,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:13:35,204 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:13:35,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:13:35,204 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:13:35,205 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:13:35,206 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:13:35,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:13:35,206 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:13:35,207 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:13:35,207 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:13:35,207 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:13:35,207 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:13:35,208 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:13:35,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:13:35,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:13:35,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:13:35,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:13:35,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:13:35,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:13:35,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:13:35,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:13:35,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:13:35,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:13:35,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:13:35,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:13:35,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:13:35,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:13:35,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:13:35,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:13:35,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:13:35,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:13:35,215 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:13:35,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:13:35,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:13:35,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:13:35,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:13:35,216 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_6a99e132-627f-4c53-9c64-b83648371e83/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3d1ff002f6e6cf179cc6204a129c133a3beda704ea9fff27ad69a10f5c1f33d [2021-11-21 01:13:35,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:13:35,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:13:35,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:13:35,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:13:35,481 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:13:35,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-fpi/ncomp.c [2021-11-21 01:13:35,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/data/8f2b21a58/ebf290f9300e4f618faf0a6028379a24/FLAGe271da209 [2021-11-21 01:13:36,040 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:13:36,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/sv-benchmarks/c/array-fpi/ncomp.c [2021-11-21 01:13:36,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/data/8f2b21a58/ebf290f9300e4f618faf0a6028379a24/FLAGe271da209 [2021-11-21 01:13:36,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/data/8f2b21a58/ebf290f9300e4f618faf0a6028379a24 [2021-11-21 01:13:36,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:13:36,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:13:36,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:13:36,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:13:36,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:13:36,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bed9e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36, skipping insertion in model container [2021-11-21 01:13:36,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:13:36,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:13:36,625 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_6a99e132-627f-4c53-9c64-b83648371e83/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2021-11-21 01:13:36,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:13:36,684 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:13:36,705 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_6a99e132-627f-4c53-9c64-b83648371e83/sv-benchmarks/c/array-fpi/ncomp.c[588,601] [2021-11-21 01:13:36,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:13:36,752 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:13:36,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36 WrapperNode [2021-11-21 01:13:36,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:13:36,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:13:36,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:13:36,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:13:36,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,791 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2021-11-21 01:13:36,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:13:36,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:13:36,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:13:36,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:13:36,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:13:36,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:13:36,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:13:36,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:13:36,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (1/1) ... [2021-11-21 01:13:36,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:13:36,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:13:36,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:13:36,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:13:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:13:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:13:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:13:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:13:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:13:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:13:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:13:37,021 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:13:37,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:13:37,293 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:13:37,333 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:13:37,333 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 01:13:37,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:13:37 BoogieIcfgContainer [2021-11-21 01:13:37,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:13:37,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:13:37,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:13:37,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:13:37,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:13:36" (1/3) ... [2021-11-21 01:13:37,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:13:37, skipping insertion in model container [2021-11-21 01:13:37,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:13:36" (2/3) ... [2021-11-21 01:13:37,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:13:37, skipping insertion in model container [2021-11-21 01:13:37,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:13:37" (3/3) ... [2021-11-21 01:13:37,346 INFO L111 eAbstractionObserver]: Analyzing ICFG ncomp.c [2021-11-21 01:13:37,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:13:37,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:13:37,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:13:37,408 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 01:13:37,408 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:13:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) 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 01:13:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:13:37,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:37,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:37,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:13:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1654620546, now seen corresponding path program 1 times [2021-11-21 01:13:37,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:13:37,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530749383] [2021-11-21 01:13:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:37,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:13:37,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:13:37,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698644541] [2021-11-21 01:13:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:37,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:37,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:13:37,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:13:37,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:13:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:37,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:13:37,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:37,818 INFO L354 Elim1Store]: treesize reduction 55, result has 40.9 percent of original size [2021-11-21 01:13:37,820 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 2 case distinctions, treesize of input 59 treesize of output 45 [2021-11-21 01:13:37,945 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 01:13:37,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:13:37,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:13:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530749383] [2021-11-21 01:13:37,946 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:13:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698644541] [2021-11-21 01:13:37,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698644541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:37,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:37,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:13:37,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115957457] [2021-11-21 01:13:37,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:37,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:13:37,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:13:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:13:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:13:37,983 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) 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) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 01:13:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:38,112 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2021-11-21 01:13:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:13:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 01:13:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:38,122 INFO L225 Difference]: With dead ends: 37 [2021-11-21 01:13:38,123 INFO L226 Difference]: Without dead ends: 22 [2021-11-21 01:13:38,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:13:38,129 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:38,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 17 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:13:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-21 01:13:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2021-11-21 01:13:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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 01:13:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2021-11-21 01:13:38,163 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 8 [2021-11-21 01:13:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:38,164 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2021-11-21 01:13:38,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 01:13:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2021-11-21 01:13:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:13:38,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:38,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:38,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:38,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 01:13:38,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:13:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:38,389 INFO L85 PathProgramCache]: Analyzing trace with hash -421812701, now seen corresponding path program 1 times [2021-11-21 01:13:38,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:13:38,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899379748] [2021-11-21 01:13:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:38,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:13:38,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:13:38,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154781478] [2021-11-21 01:13:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:38,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:38,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:13:38,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:13:38,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:13:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:38,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:13:38,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:38,538 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 01:13:38,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:13:38,539 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:13:38,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899379748] [2021-11-21 01:13:38,539 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:13:38,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154781478] [2021-11-21 01:13:38,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154781478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:38,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:38,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:13:38,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732012305] [2021-11-21 01:13:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:38,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:13:38,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:13:38,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:13:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:13:38,542 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 01:13:38,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:38,618 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-21 01:13:38,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:13:38,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 01:13:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:38,622 INFO L225 Difference]: With dead ends: 30 [2021-11-21 01:13:38,622 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 01:13:38,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 01:13:38,626 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:38,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:13:38,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 01:13:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-11-21 01:13:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 01:13:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-11-21 01:13:38,642 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2021-11-21 01:13:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:38,643 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-21 01:13:38,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 01:13:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-11-21 01:13:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:13:38,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:38,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:38,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:38,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:38,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:13:38,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:38,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1222239637, now seen corresponding path program 1 times [2021-11-21 01:13:38,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:13:38,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653914578] [2021-11-21 01:13:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:38,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:13:38,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:13:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251739197] [2021-11-21 01:13:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:38,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:13:38,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:13:38,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:13:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:38,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:13:38,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:39,026 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 01:13:39,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:13:39,078 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 01:13:39,079 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:13:39,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653914578] [2021-11-21 01:13:39,079 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:13:39,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251739197] [2021-11-21 01:13:39,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251739197] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:13:39,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [641404637] [2021-11-21 01:13:39,096 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:13:39,097 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:13:39,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:13:39,107 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:13:39,108 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:13:39,395 INFO L354 Elim1Store]: treesize reduction 185, result has 24.5 percent of original size [2021-11-21 01:13:39,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 76 [2021-11-21 01:13:39,707 INFO L354 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2021-11-21 01:13:39,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 63 [2021-11-21 01:13:40,045 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:13:40,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:13:40,199 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:13:40,203 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:13:40,261 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:13:40,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,278 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 01:13:40,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:13:40,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,533 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:13:40,534 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 01:13:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,687 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 116 treesize of output 67 [2021-11-21 01:13:40,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,727 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 01:13:40,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,758 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 159 treesize of output 84 [2021-11-21 01:13:40,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:40,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-21 01:13:40,963 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:13:40,974 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:13:41,443 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:13:41,806 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:13:41,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:13:41,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-21 01:13:41,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229251174] [2021-11-21 01:13:41,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:13:41,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:13:41,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:13:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:13:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:13:41,809 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:41,920 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-21 01:13:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:13:41,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:13:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:41,922 INFO L225 Difference]: With dead ends: 33 [2021-11-21 01:13:41,922 INFO L226 Difference]: Without dead ends: 27 [2021-11-21 01:13:41,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:13:41,924 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:41,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:13:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-21 01:13:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2021-11-21 01:13:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 01:13:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-21 01:13:41,933 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2021-11-21 01:13:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:41,933 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-21 01:13:41,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-21 01:13:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:13:41,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:41,934 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:41,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 01:13:42,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:42,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:13:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash -533842186, now seen corresponding path program 1 times [2021-11-21 01:13:42,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:13:42,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943872303] [2021-11-21 01:13:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:42,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:13:42,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:13:42,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64388138] [2021-11-21 01:13:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:42,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:42,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:13:42,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:13:42,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:13:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:42,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:13:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:42,313 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 01:13:42,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:13:42,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:13:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943872303] [2021-11-21 01:13:42,314 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:13:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64388138] [2021-11-21 01:13:42,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64388138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:13:42,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:13:42,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:13:42,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515673915] [2021-11-21 01:13:42,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:13:42,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:13:42,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:13:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:13:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:13:42,318 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:42,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:13:42,384 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-21 01:13:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:13:42,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:13:42,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:13:42,387 INFO L225 Difference]: With dead ends: 29 [2021-11-21 01:13:42,387 INFO L226 Difference]: Without dead ends: 18 [2021-11-21 01:13:42,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 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 01:13:42,391 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:13:42,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:13:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-21 01:13:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-11-21 01:13:42,398 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 01:13:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-21 01:13:42,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 11 [2021-11-21 01:13:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:13:42,399 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-21 01:13:42,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:13:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-11-21 01:13:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:13:42,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:13:42,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:13:42,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:13:42,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:42,611 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:13:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:13:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1096726144, now seen corresponding path program 1 times [2021-11-21 01:13:42,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:13:42,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545049713] [2021-11-21 01:13:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:42,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:13:42,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:13:42,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883681791] [2021-11-21 01:13:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:13:42,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:13:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:13:42,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:13:42,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:13:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:13:42,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-21 01:13:42,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:13:42,763 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 14 treesize of output 12 [2021-11-21 01:13:42,786 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-21 01:13:42,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 30 [2021-11-21 01:13:42,869 INFO L354 Elim1Store]: treesize reduction 54, result has 31.6 percent of original size [2021-11-21 01:13:42,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 60 [2021-11-21 01:13:43,116 INFO L354 Elim1Store]: treesize reduction 132, result has 24.1 percent of original size [2021-11-21 01:13:43,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 96 [2021-11-21 01:13:50,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:13:50,933 INFO L354 Elim1Store]: treesize reduction 260, result has 11.3 percent of original size [2021-11-21 01:13:50,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 139 treesize of output 118 [2021-11-21 01:14:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:01,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:04,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:14:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545049713] [2021-11-21 01:14:04,055 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:14:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883681791] [2021-11-21 01:14:04,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883681791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:04,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1894584238] [2021-11-21 01:14:04,058 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:14:04,058 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:14:04,059 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:14:04,059 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:14:04,059 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:14:04,316 INFO L354 Elim1Store]: treesize reduction 185, result has 24.5 percent of original size [2021-11-21 01:14:04,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 76 [2021-11-21 01:14:04,498 INFO L354 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2021-11-21 01:14:04,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 63 [2021-11-21 01:14:04,789 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:14:04,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:14:04,896 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:14:04,897 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:14:04,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:04,961 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 01:14:04,976 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:04,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:05,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,092 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:14:05,092 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 01:14:05,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,167 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 01:14:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,226 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 01:14:05,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:14:05,247 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 110 [2021-11-21 01:14:05,366 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:05,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,373 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 01:14:05,501 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:05,525 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:05,525 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 01:14:05,535 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:05,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:05,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:05,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:05,699 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:05,700 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 01:14:05,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:05,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:05,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:05,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:05,915 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:05,915 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 265 treesize of output 154 [2021-11-21 01:14:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,060 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:06,061 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 306 treesize of output 183 [2021-11-21 01:14:06,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,819 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:06,819 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 901 treesize of output 654 [2021-11-21 01:14:06,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:06,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:06,861 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:06,862 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 688 treesize of output 466 [2021-11-21 01:14:07,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,061 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:07,062 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 01:14:07,083 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:07,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,252 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:07,253 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 01:14:07,263 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:07,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,431 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:07,431 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 01:14:07,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,625 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:07,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 228 treesize of output 142 [2021-11-21 01:14:07,683 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:07,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,779 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:07,780 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 292 treesize of output 179 [2021-11-21 01:14:07,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,832 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:07,833 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 260 treesize of output 161 [2021-11-21 01:14:07,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:07,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:07,949 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:07,949 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 01:14:07,966 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:08,282 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:14:08,633 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:14:08,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:14:08,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-11-21 01:14:08,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361951607] [2021-11-21 01:14:08,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:14:08,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 01:14:08,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:14:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 01:14:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=347, Unknown=4, NotChecked=0, Total=420 [2021-11-21 01:14:08,635 INFO L87 Difference]: Start difference. First operand 13 states and 16 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 01:14:18,526 WARN L227 SmtUtils]: Spent 7.92s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:14:26,563 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 01:14:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:28,150 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2021-11-21 01:14:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:14:28,151 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 01:14:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:28,153 INFO L225 Difference]: With dead ends: 31 [2021-11-21 01:14:28,153 INFO L226 Difference]: Without dead ends: 29 [2021-11-21 01:14:28,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=108, Invalid=487, Unknown=5, NotChecked=0, Total=600 [2021-11-21 01:14:28,154 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:28,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 1 Unknown, 32 Unchecked, 4.1s Time] [2021-11-21 01:14:28,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-21 01:14:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-21 01:14:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 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 01:14:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2021-11-21 01:14:28,162 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 11 [2021-11-21 01:14:28,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:28,162 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2021-11-21 01:14:28,163 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 01:14:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2021-11-21 01:14:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:14:28,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:28,164 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:28,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:28,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:28,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:14:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash -369512678, now seen corresponding path program 2 times [2021-11-21 01:14:28,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:14:28,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540458634] [2021-11-21 01:14:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:28,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:14:28,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:14:28,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155725522] [2021-11-21 01:14:28,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:14:28,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:14:28,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:14:28,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:14:28,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:14:28,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:14:28,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:14:28,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:14:28,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:14:28,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:14:28,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540458634] [2021-11-21 01:14:28,631 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:14:28,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155725522] [2021-11-21 01:14:28,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155725522] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:28,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1893923533] [2021-11-21 01:14:28,633 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:14:28,634 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:14:28,634 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:14:28,634 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:14:28,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:14:28,991 INFO L354 Elim1Store]: treesize reduction 185, result has 24.5 percent of original size [2021-11-21 01:14:28,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 76 [2021-11-21 01:14:29,450 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:14:29,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:14:29,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2021-11-21 01:14:29,768 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:29,786 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:29,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:29,798 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 01:14:29,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:29,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,029 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:14:30,030 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 01:14:30,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,142 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 65 [2021-11-21 01:14:30,182 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:30,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,245 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 211 treesize of output 111 [2021-11-21 01:14:30,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,308 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:14:30,308 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 01:14:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,460 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 01:14:30,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:30,495 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:30,681 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:30,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:30,705 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:30,706 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 01:14:30,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:30,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:30,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:30,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:30,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:30,890 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:30,891 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 01:14:30,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,067 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:31,067 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 366 treesize of output 227 [2021-11-21 01:14:31,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,290 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:31,291 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 346 treesize of output 207 [2021-11-21 01:14:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,382 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:31,382 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 352 treesize of output 218 [2021-11-21 01:14:31,553 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:31,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,577 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:31,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2021-11-21 01:14:31,740 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:31,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:31,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,780 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:31,781 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 01:14:31,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:31,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:31,934 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:31,935 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 01:14:32,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,143 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:32,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 212 treesize of output 126 [2021-11-21 01:14:32,203 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:32,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,277 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:32,278 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 352 treesize of output 215 [2021-11-21 01:14:32,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,358 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:32,359 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 299 treesize of output 176 [2021-11-21 01:14:32,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:32,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:32,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:32,516 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:32,517 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 01:14:32,533 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:33,019 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:14:33,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:14:33,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:14:33,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-21 01:14:33,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104714376] [2021-11-21 01:14:33,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:14:33,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:14:33,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:14:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:14:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:14:33,426 INFO L87 Difference]: Start difference. First operand 24 states and 33 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 01:14:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:33,638 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-11-21 01:14:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:14:33,639 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 12 [2021-11-21 01:14:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:33,640 INFO L225 Difference]: With dead ends: 57 [2021-11-21 01:14:33,640 INFO L226 Difference]: Without dead ends: 44 [2021-11-21 01:14:33,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:14:33,641 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:33,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 15 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:14:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-21 01:14:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 27. [2021-11-21 01:14:33,648 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 01:14:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-21 01:14:33,649 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 12 [2021-11-21 01:14:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:33,649 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-21 01:14:33,649 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 01:14:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-21 01:14:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:14:33,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:33,650 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:33,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-21 01:14:33,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:33,852 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:14:33,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:33,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1049984232, now seen corresponding path program 3 times [2021-11-21 01:14:33,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:14:33,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387704788] [2021-11-21 01:14:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:33,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:14:33,897 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:14:33,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658911406] [2021-11-21 01:14:33,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:14:33,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:33,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:14:33,904 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:14:33,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:14:33,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:14:33,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:14:33,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:14:33,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:14:34,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:14:34,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:14:34,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387704788] [2021-11-21 01:14:34,138 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:14:34,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658911406] [2021-11-21 01:14:34,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658911406] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:34,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [138093253] [2021-11-21 01:14:34,140 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:14:34,141 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:14:34,141 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:14:34,141 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:14:34,141 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:14:34,522 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:14:34,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:14:34,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 17 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 46 [2021-11-21 01:14:34,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 16 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2021-11-21 01:14:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:34,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:34,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:34,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:34,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:34,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:34,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:34,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:34,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 385 [2021-11-21 01:14:35,012 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:35,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 74 [2021-11-21 01:14:35,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 81 [2021-11-21 01:14:35,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 76 [2021-11-21 01:14:35,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:35,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:35,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:35,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:35,868 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-21 01:14:35,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 27 case distinctions, treesize of input 581 treesize of output 779 [2021-11-21 01:14:36,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,125 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 01:14:36,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 99 [2021-11-21 01:14:36,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:36,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:36,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:36,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:36,359 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-21 01:14:36,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 649 treesize of output 505 [2021-11-21 01:14:37,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:37,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:37,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:37,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:37,237 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-21 01:14:37,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 499 treesize of output 357 [2021-11-21 01:14:38,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,384 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 01:14:38,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:38,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,654 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:38,655 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 01:14:38,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,824 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:14:38,825 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 01:14:38,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:38,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:38,971 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:14:38,972 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 6 new quantified variables, introduced 15 case distinctions, treesize of input 312 treesize of output 183 [2021-11-21 01:14:39,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:39,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:39,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:39,193 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:39,193 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 15 case distinctions, treesize of input 331 treesize of output 196 [2021-11-21 01:14:39,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:39,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:39,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:39,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:40,024 INFO L354 Elim1Store]: treesize reduction 83, result has 14.4 percent of original size [2021-11-21 01:14:40,025 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 737 treesize of output 564 [2021-11-21 01:14:40,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:40,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:40,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,159 INFO L354 Elim1Store]: treesize reduction 68, result has 29.9 percent of original size [2021-11-21 01:14:40,159 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 586 treesize of output 366 [2021-11-21 01:14:40,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:40,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:40,737 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:40,737 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 01:14:40,761 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:41,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,036 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:41,036 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 01:14:41,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,375 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:14:41,376 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 01:14:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,883 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:14:41,884 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 230 treesize of output 148 [2021-11-21 01:14:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:41,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:41,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:42,010 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:14:42,010 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 8 new quantified variables, introduced 18 case distinctions, treesize of input 332 treesize of output 195 [2021-11-21 01:14:42,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:42,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:42,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:42,178 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:14:42,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 247 treesize of output 152 [2021-11-21 01:14:42,346 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:42,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:42,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:42,364 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:42,364 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 01:14:42,788 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:14:43,212 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:14:43,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:14:43,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-21 01:14:43,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319458226] [2021-11-21 01:14:43,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:14:43,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:14:43,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:14:43,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:14:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:14:43,214 INFO L87 Difference]: Start difference. First operand 27 states and 35 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 01:14:43,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:14:43,458 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2021-11-21 01:14:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:14:43,458 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 01:14:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:14:43,459 INFO L225 Difference]: With dead ends: 52 [2021-11-21 01:14:43,459 INFO L226 Difference]: Without dead ends: 41 [2021-11-21 01:14:43,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:14:43,461 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:14:43,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:14:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-21 01:14:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 22. [2021-11-21 01:14:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:14:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-21 01:14:43,468 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-11-21 01:14:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:14:43,468 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-21 01:14:43,468 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 01:14:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-21 01:14:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:14:43,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:14:43,469 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:14:43,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:14:43,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:43,684 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:14:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:14:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash 757463352, now seen corresponding path program 1 times [2021-11-21 01:14:43,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:14:43,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510917294] [2021-11-21 01:14:43,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:43,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:14:43,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:14:43,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588465064] [2021-11-21 01:14:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:14:43,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:14:43,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:14:43,716 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:14:43,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:14:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:14:43,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 01:14:43,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:14:43,953 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-21 01:14:43,953 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 2 case distinctions, treesize of input 59 treesize of output 41 [2021-11-21 01:14:43,994 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:43,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-21 01:14:44,062 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-21 01:14:44,062 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 1 case distinctions, treesize of input 41 treesize of output 42 [2021-11-21 01:14:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:44,305 INFO L354 Elim1Store]: treesize reduction 128, result has 11.7 percent of original size [2021-11-21 01:14:44,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 68 treesize of output 64 [2021-11-21 01:14:44,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:44,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:44,600 INFO L354 Elim1Store]: treesize reduction 180, result has 11.8 percent of original size [2021-11-21 01:14:44,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 85 treesize of output 80 [2021-11-21 01:14:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:45,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:14:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:14:50,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:14:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510917294] [2021-11-21 01:14:50,146 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:14:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588465064] [2021-11-21 01:14:50,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588465064] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:14:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1209127970] [2021-11-21 01:14:50,148 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-21 01:14:50,148 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:14:50,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:14:50,149 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:14:50,149 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:14:50,339 INFO L354 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2021-11-21 01:14:50,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 63 [2021-11-21 01:14:50,779 INFO L354 Elim1Store]: treesize reduction 185, result has 24.5 percent of original size [2021-11-21 01:14:50,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 76 [2021-11-21 01:14:51,230 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:14:51,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:14:51,411 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:14:51,412 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:14:51,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,447 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 01:14:51,463 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:51,482 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:51,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:14:51,676 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 01:14:51,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,761 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 01:14:51,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,858 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 116 treesize of output 66 [2021-11-21 01:14:51,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:51,895 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:14:51,895 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 186 treesize of output 87 [2021-11-21 01:14:52,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,073 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 01:14:52,090 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:52,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,330 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:52,331 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 01:14:52,343 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:52,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,507 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:52,507 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 01:14:52,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,660 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:52,660 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 212 treesize of output 126 [2021-11-21 01:14:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,785 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:52,785 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 294 treesize of output 171 [2021-11-21 01:14:52,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:52,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:52,860 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:52,860 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 279 treesize of output 141 [2021-11-21 01:14:52,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:53,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,021 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:53,022 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 01:14:53,057 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:53,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:53,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,321 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:53,321 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 01:14:53,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,480 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:53,480 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 01:14:53,544 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:53,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,651 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:53,652 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 328 treesize of output 189 [2021-11-21 01:14:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,776 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:53,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 302 treesize of output 192 [2021-11-21 01:14:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:53,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:53,874 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:14:53,875 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 303 treesize of output 168 [2021-11-21 01:14:54,089 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:54,109 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:14:54,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:54,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:14:54,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:14:54,133 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:14:54,133 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 01:14:56,008 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:14:57,092 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:14:57,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:14:57,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-21 01:14:57,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916677518] [2021-11-21 01:14:57,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:14:57,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-21 01:14:57,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:14:57,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-21 01:14:57,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:14:57,094 INFO L87 Difference]: Start difference. First operand 22 states and 26 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 01:15:03,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:15:09,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:15:09,829 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-11-21 01:15:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:15:09,829 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 01:15:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:15:09,830 INFO L225 Difference]: With dead ends: 31 [2021-11-21 01:15:09,830 INFO L226 Difference]: Without dead ends: 29 [2021-11-21 01:15:09,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2021-11-21 01:15:09,832 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:15:09,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 23 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 24 Unchecked, 4.5s Time] [2021-11-21 01:15:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-21 01:15:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-11-21 01:15:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:15:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-21 01:15:09,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2021-11-21 01:15:09,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:15:09,839 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-21 01:15:09,840 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 01:15:09,840 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-21 01:15:09,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:15:09,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:15:09,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:15:09,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:15:10,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 01:15:10,041 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:15:10,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:15:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1801942402, now seen corresponding path program 4 times [2021-11-21 01:15:10,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:15:10,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461838907] [2021-11-21 01:15:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:15:10,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:15:10,077 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:15:10,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042688594] [2021-11-21 01:15:10,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:15:10,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:15:10,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:15:10,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:15:10,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:15:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:15:10,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-21 01:15:10,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:15:10,510 INFO L354 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2021-11-21 01:15:10,510 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 2 case distinctions, treesize of input 59 treesize of output 33 [2021-11-21 01:15:10,539 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 14 treesize of output 12 [2021-11-21 01:15:10,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:10,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,648 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:15:10,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 213 treesize of output 327 [2021-11-21 01:15:10,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:10,742 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:15:10,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 62 [2021-11-21 01:15:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:10,777 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:15:10,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 62 [2021-11-21 01:15:10,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:10,801 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:15:10,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 59 [2021-11-21 01:15:10,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:10,944 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:15:10,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 60 [2021-11-21 01:15:11,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:11,244 INFO L354 Elim1Store]: treesize reduction 25, result has 34.2 percent of original size [2021-11-21 01:15:11,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 83 treesize of output 78 [2021-11-21 01:15:11,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:11,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:11,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:11,456 INFO L354 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2021-11-21 01:15:11,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 114 treesize of output 100 [2021-11-21 01:15:15,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:15,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:15,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:15,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:15,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:15,646 INFO L354 Elim1Store]: treesize reduction 68, result has 18.1 percent of original size [2021-11-21 01:15:15,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 11 select indices, 11 select index equivalence classes, 16 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 29 case distinctions, treesize of input 369 treesize of output 591 [2021-11-21 01:15:16,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:16,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:16,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:16,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:16,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:16,902 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 01:15:16,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 385 treesize of output 256 [2021-11-21 01:15:17,023 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:15:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,164 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-21 01:15:17,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 513 treesize of output 333 [2021-11-21 01:15:17,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:17,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:17,300 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 01:15:17,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 16 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 24 case distinctions, treesize of input 453 treesize of output 273 [2021-11-21 01:15:19,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:19,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:19,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:15:19,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:19,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:15:19,610 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-21 01:15:19,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 30 case distinctions, treesize of input 168 treesize of output 128 [2021-11-21 01:15:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:15:21,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:16:38,008 WARN L227 SmtUtils]: Spent 33.43s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:16:38,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:16:38,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:16:38,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461838907] [2021-11-21 01:16:38,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:16:38,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042688594] [2021-11-21 01:16:38,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042688594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:16:38,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [620780846] [2021-11-21 01:16:38,025 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:16:38,025 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:16:38,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:16:38,026 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:16:38,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:16:38,314 INFO L354 Elim1Store]: treesize reduction 185, result has 24.5 percent of original size [2021-11-21 01:16:38,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 76 [2021-11-21 01:16:38,568 INFO L354 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2021-11-21 01:16:38,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 63 [2021-11-21 01:16:39,030 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:16:39,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:16:39,216 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:16:39,217 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:16:39,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,253 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 01:16:39,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:39,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,470 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:16:39,470 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 01:16:39,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:39,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,612 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 01:16:39,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,700 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 01:16:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:16:39,811 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 82 [2021-11-21 01:16:39,953 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:39,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:39,971 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 01:16:39,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:40,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,272 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:16:40,272 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 01:16:40,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,484 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:16:40,484 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 01:16:40,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,632 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:16:40,632 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 194 treesize of output 124 [2021-11-21 01:16:40,700 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:40,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,798 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:16:40,799 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 296 treesize of output 167 [2021-11-21 01:16:40,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:40,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:40,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,002 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:16:41,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 284 treesize of output 158 [2021-11-21 01:16:41,111 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:41,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,136 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:16:41,136 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 01:16:41,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,319 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:16:41,319 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 01:16:41,330 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:41,342 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:41,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,543 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:16:41,543 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 01:16:41,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,669 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:16:41,670 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 263 treesize of output 152 [2021-11-21 01:16:41,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:41,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:41,836 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:16:41,836 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 304 treesize of output 181 [2021-11-21 01:16:42,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:42,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:42,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:42,432 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:16:42,433 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 729 treesize of output 522 [2021-11-21 01:16:42,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:42,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:42,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:42,634 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:16:42,635 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 508 treesize of output 286 [2021-11-21 01:16:42,871 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:16:42,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:16:42,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:16:42,899 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:16:42,899 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 01:16:43,362 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:16:45,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:16:45,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:16:45,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-11-21 01:16:45,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900260615] [2021-11-21 01:16:45,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:16:45,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-21 01:16:45,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:16:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-21 01:16:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=585, Unknown=1, NotChecked=0, Total=702 [2021-11-21 01:16:45,527 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 01:16:49,588 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse91 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse92 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse94 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse99 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse104 (* .cse91 8))) (let ((.cse23 (select .cse99 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse104))) (.cse24 (select .cse94 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse104))) (.cse98 (* .cse92 8)) (.cse31 (select .cse99 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse104 (- 34359738368)))) (.cse32 (select .cse94 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse104 (- 34359738368))))) (let ((.cse96 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse101 (+ .cse31 .cse32)) (.cse100 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse98 (- 34359738368))) (.cse102 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse98)) (.cse103 (+ .cse23 .cse24))) (let ((.cse66 (store .cse99 .cse102 .cse103)) (.cse22 (store .cse99 .cse100 .cse103)) (.cse95 (+ 6 .cse32)) (.cse68 (store .cse99 .cse102 .cse101)) (.cse18 (store .cse99 .cse100 .cse101)) (.cse93 (* .cse96 8)) (.cse70 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse98)) (.cse26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse98 (- 34359738368))) (.cse97 (+ 6 .cse24))) (let ((.cse38 (store .cse94 .cse26 .cse97)) (.cse44 (store .cse94 .cse70 .cse97)) (.cse19 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse93 (- 34359738368))) (.cse28 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse93)) (.cse30 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse18)) (.cse69 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse68)) (.cse29 (< 2147483647 .cse96)) (.cse9 (store .cse94 .cse26 .cse95)) (.cse51 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse93 (- 34359738368))) (.cse27 (<= .cse96 2147483647)) (.cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse16 (store .cse94 .cse70 .cse95)) (.cse65 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse93)) (.cse17 (<= .cse91 2147483647)) (.cse0 (<= .cse92 2147483647)) (.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse22)) (.cse71 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse66)) (.cse10 (< 2147483647 .cse92)) (.cse21 (< 2147483647 .cse91))) (and (or (and (or .cse0 (= (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse9))) (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse7 (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse2 (store .cse7 .cse8 (+ .cse4 .cse5)))) (store .cse2 .cse3 (+ .cse4 .cse5 (select (select (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| .cse2) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)) (or .cse10 (= (select (select (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse16))) (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse15 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse13 (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse14 (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse12 (store .cse15 .cse8 (+ .cse13 .cse14)))) (store .cse12 .cse3 (+ .cse13 (select (select (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse14))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0))) .cse17) (or .cse0 (let ((.cse20 (+ (select (select .cse30 |c_ULTIMATE.start_main_~a~0#1.base|) .cse26) .cse31 .cse32))) (and (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse18 .cse19 .cse20)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) .cse17) (or .cse21 (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse22 .cse19 (+ .cse23 .cse24 (select (select .cse25 |c_ULTIMATE.start_main_~a~0#1.base|) .cse26)))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) .cse27) (or (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse18 .cse28 .cse20)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)) .cse29)))) (or (and (or (= c_~N~0 (select (select (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse38))) (store .cse33 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse37 (select .cse33 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse35 (select .cse38 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse36 (select .cse37 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse34 (store .cse37 .cse8 (+ .cse35 .cse36)))) (store .cse34 .cse3 (+ (select (select (store .cse33 |c_ULTIMATE.start_main_~b~0#1.base| .cse34) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse35 .cse36))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)) .cse0) (or .cse10 (= c_~N~0 (select (select (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse44))) (store .cse39 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse43 (select .cse39 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse41 (select .cse43 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse42 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse40 (store .cse43 .cse8 (+ .cse41 .cse42)))) (store .cse40 .cse3 (+ .cse41 (select (select (store .cse39 |c_ULTIMATE.start_main_~b~0#1.base| .cse40) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse42))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) .cse21) (or (let ((.cse52 (+ 12 .cse24))) (and (or .cse0 (= (select (select (let ((.cse50 (store .cse38 .cse51 .cse52))) (let ((.cse45 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse50))) (store .cse45 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse49 (select .cse45 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse47 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse48 (select .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse46 (store .cse49 .cse8 (+ .cse47 .cse48)))) (store .cse46 .cse3 (+ .cse47 .cse48 (select (select (store .cse45 |c_ULTIMATE.start_main_~b~0#1.base| .cse46) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)) (or .cse10 (and (or (= (select (select (let ((.cse58 (store .cse44 .cse51 .cse52))) (let ((.cse53 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse58))) (store .cse53 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse57 (select .cse53 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse55 (select .cse57 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse56 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse54 (store .cse57 .cse8 (+ .cse55 .cse56)))) (store .cse54 .cse3 (+ (select (select (store .cse53 |c_ULTIMATE.start_main_~b~0#1.base| .cse54) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse55 .cse56)))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) .cse27) (or (= (select (select (let ((.cse64 (store .cse44 .cse65 .cse52))) (let ((.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse64))) (store .cse59 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse63 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse61 (select .cse63 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse62 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse60 (store .cse63 .cse8 (+ .cse61 .cse62)))) (store .cse60 .cse3 (+ .cse61 (select (select (store .cse59 |c_ULTIMATE.start_main_~b~0#1.base| .cse60) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse62)))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) .cse29))))) .cse21) (or (let ((.cse67 (+ (select (select .cse71 |c_ULTIMATE.start_main_~a~0#1.base|) .cse70) .cse23 .cse24))) (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse66 .cse19 .cse67)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) .cse27) (or (and (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse68 .cse28 (+ (select (select .cse69 |c_ULTIMATE.start_main_~a~0#1.base|) .cse70) .cse31 .cse32))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) .cse17) (or (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse66 .cse28 .cse67)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)) .cse21)) .cse29))) .cse10) (or (and (or .cse0 (= c_~N~0 (select (select .cse30 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))) (or .cse10 (= c_~N~0 (select (select .cse69 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) .cse17) (or (let ((.cse78 (+ 12 .cse32))) (and (or .cse0 (and (or .cse29 (= (select (select (let ((.cse77 (store .cse9 .cse65 .cse78))) (let ((.cse72 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse77))) (store .cse72 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse76 (select .cse72 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse74 (select .cse77 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse75 (select .cse76 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse73 (store .cse76 .cse8 (+ .cse74 .cse75)))) (store .cse73 .cse3 (+ .cse74 .cse75 (select (select (store .cse72 |c_ULTIMATE.start_main_~b~0#1.base| .cse73) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)) (or (= (select (select (let ((.cse84 (store .cse9 .cse51 .cse78))) (let ((.cse79 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse84))) (store .cse79 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse83 (select .cse79 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse81 (select .cse83 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse82 (select .cse84 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse80 (store .cse83 .cse8 (+ .cse81 .cse82)))) (store .cse80 .cse3 (+ .cse81 (select (select (store .cse79 |c_ULTIMATE.start_main_~b~0#1.base| .cse80) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse82)))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0) .cse27))) (or .cse10 (= (select (select (let ((.cse90 (store .cse16 .cse65 .cse78))) (let ((.cse85 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse90))) (store .cse85 |c_ULTIMATE.start_main_~b~0#1.base| (let ((.cse89 (select .cse85 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse87 (select .cse90 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse88 (select .cse89 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse86 (store .cse89 .cse8 (+ .cse87 .cse88)))) (store .cse86 .cse3 (+ (select (select (store .cse85 |c_ULTIMATE.start_main_~b~0#1.base| .cse86) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse87 .cse88)))))))) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)))) .cse17) (or (and (or .cse0 (= (select (select .cse25 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|) c_~N~0)) (or (= c_~N~0 (select (select .cse71 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)) .cse10)) .cse21) (= c_~N~0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|))))))))) is different from true [2021-11-21 01:19:48,507 WARN L227 SmtUtils]: Spent 2.50m on a formula simplification that was a NOOP. DAG size: 207 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:19:50,558 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 01:19:52,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:19:54,624 WARN L515 Checker$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 01:20:05,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:07,741 WARN L515 Checker$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 01:20:09,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:20:13,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:21:46,055 WARN L227 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 269 DAG size of output: 201 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:21:48,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:21:50,106 WARN L515 Checker$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 01:21:52,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:01,974 WARN L515 Checker$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 01:22:05,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:08,047 WARN L515 Checker$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 01:22:10,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:12,282 WARN L515 Checker$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 01:22:14,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:22:20,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 01:22:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:20,208 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2021-11-21 01:22:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-21 01:22:20,209 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 01:22:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:20,209 INFO L225 Difference]: With dead ends: 50 [2021-11-21 01:22:20,209 INFO L226 Difference]: Without dead ends: 48 [2021-11-21 01:22:20,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 365.6s TimeCoverageRelationStatistics Valid=174, Invalid=810, Unknown=12, NotChecked=60, Total=1056 [2021-11-21 01:22:20,210 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 17 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 41.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:20,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 161 Invalid, 15 Unknown, 75 Unchecked, 41.9s Time] [2021-11-21 01:22:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-21 01:22:20,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2021-11-21 01:22:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 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 01:22:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2021-11-21 01:22:20,225 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 14 [2021-11-21 01:22:20,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:20,226 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2021-11-21 01:22:20,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 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 01:22:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2021-11-21 01:22:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:22:20,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:20,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:20,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:20,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:20,432 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1386342761, now seen corresponding path program 5 times [2021-11-21 01:22:20,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:20,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860684258] [2021-11-21 01:22:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:20,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:20,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:20,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502542636] [2021-11-21 01:22:20,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:22:20,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:20,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:20,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:22:21,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:22:21,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:22:21,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:22:21,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:22:21,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:22:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:22:21,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:21,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860684258] [2021-11-21 01:22:21,263 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:21,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502542636] [2021-11-21 01:22:21,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502542636] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:22:21,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2080745645] [2021-11-21 01:22:21,266 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:22:21,266 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:22:21,267 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:22:21,267 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:22:21,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:22:21,652 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:22:21,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:22:21,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2021-11-21 01:22:21,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 16 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 46 [2021-11-21 01:22:22,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 62 [2021-11-21 01:22:22,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:22,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:22,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:22,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:22,668 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-11-21 01:22:22,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 29 case distinctions, treesize of input 552 treesize of output 734 [2021-11-21 01:22:23,234 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:24,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:26,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:26,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:26,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:26,362 INFO L354 Elim1Store]: treesize reduction 129, result has 9.8 percent of original size [2021-11-21 01:22:26,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 705 treesize of output 635 [2021-11-21 01:22:27,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:27,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:27,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:27,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:28,096 INFO L354 Elim1Store]: treesize reduction 114, result has 20.3 percent of original size [2021-11-21 01:22:28,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 677 treesize of output 589 [2021-11-21 01:22:30,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:30,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:30,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:30,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:30,560 INFO L354 Elim1Store]: treesize reduction 111, result has 11.2 percent of original size [2021-11-21 01:22:30,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 570 treesize of output 405 [2021-11-21 01:22:32,231 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:32,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,260 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 01:22:32,284 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:32,448 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:32,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:32,472 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:32,473 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 01:22:32,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:32,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:32,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:32,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:32,774 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:22:32,774 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 01:22:32,920 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:33,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:33,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:33,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:33,083 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:22:33,084 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 320 treesize of output 197 [2021-11-21 01:22:33,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:33,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:33,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:33,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:33,351 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:22:33,352 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 279 treesize of output 168 [2021-11-21 01:22:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,304 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:22:34,304 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 833 treesize of output 603 [2021-11-21 01:22:34,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,375 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:22:34,375 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 635 treesize of output 362 [2021-11-21 01:22:34,650 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:34,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,684 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:34,684 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 01:22:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:34,902 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:34,903 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 01:22:34,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:34,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:35,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:35,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:35,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:35,097 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:22:35,098 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 01:22:35,734 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:36,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,098 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:22:36,098 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 348 treesize of output 214 [2021-11-21 01:22:36,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,331 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:22:36,332 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 8 new quantified variables, introduced 18 case distinctions, treesize of input 361 treesize of output 228 [2021-11-21 01:22:36,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,537 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:22:36,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 249 treesize of output 154 [2021-11-21 01:22:36,870 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:36,890 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:36,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:36,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:36,911 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:36,912 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 01:22:37,477 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:22:38,009 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:22:38,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:22:38,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-21 01:22:38,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767692155] [2021-11-21 01:22:38,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:22:38,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:22:38,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:22:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-21 01:22:38,012 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:22:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:38,516 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2021-11-21 01:22:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 01:22:38,517 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 01:22:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:38,518 INFO L225 Difference]: With dead ends: 80 [2021-11-21 01:22:38,518 INFO L226 Difference]: Without dead ends: 53 [2021-11-21 01:22:38,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2021-11-21 01:22:38,520 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:38,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 23 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:22:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-21 01:22:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2021-11-21 01:22:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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 01:22:38,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-11-21 01:22:38,535 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 16 [2021-11-21 01:22:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:38,536 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-11-21 01:22:38,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:22:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-11-21 01:22:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:22:38,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:38,537 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:38,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:38,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 01:22:38,740 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2121192870, now seen corresponding path program 6 times [2021-11-21 01:22:38,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:38,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653385446] [2021-11-21 01:22:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:38,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:38,791 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:38,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148102205] [2021-11-21 01:22:38,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:22:38,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:38,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:38,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:38,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 01:22:38,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:22:38,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:22:38,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:22:38,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:22:39,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:22:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:22:39,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:22:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653385446] [2021-11-21 01:22:39,128 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:22:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148102205] [2021-11-21 01:22:39,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148102205] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:22:39,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [678272639] [2021-11-21 01:22:39,130 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-21 01:22:39,130 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:22:39,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:22:39,130 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:22:39,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:22:39,497 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:22:39,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:22:39,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 16 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 46 [2021-11-21 01:22:39,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 42 [2021-11-21 01:22:40,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 62 [2021-11-21 01:22:40,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:40,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:40,594 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-11-21 01:22:40,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 29 case distinctions, treesize of input 566 treesize of output 744 [2021-11-21 01:22:41,004 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:41,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:41,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:41,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:41,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:41,277 INFO L354 Elim1Store]: treesize reduction 142, result has 0.7 percent of original size [2021-11-21 01:22:41,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 580 treesize of output 480 [2021-11-21 01:22:42,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:42,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:42,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:42,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:42,480 INFO L354 Elim1Store]: treesize reduction 129, result has 9.8 percent of original size [2021-11-21 01:22:42,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 452 treesize of output 362 [2021-11-21 01:22:43,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:43,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:43,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:43,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:43,482 INFO L354 Elim1Store]: treesize reduction 124, result has 0.8 percent of original size [2021-11-21 01:22:43,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 456 treesize of output 335 [2021-11-21 01:22:44,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:44,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,301 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 01:22:44,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:44,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:44,547 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:44,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 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 01:22:44,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:44,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:44,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:44,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:44,847 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:22:44,847 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 01:22:45,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,359 INFO L354 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2021-11-21 01:22:45,359 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 287 treesize of output 162 [2021-11-21 01:22:45,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,549 INFO L354 Elim1Store]: treesize reduction 123, result has 10.2 percent of original size [2021-11-21 01:22:45,549 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 308 treesize of output 198 [2021-11-21 01:22:45,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,695 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:22:45,695 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 301 treesize of output 153 [2021-11-21 01:22:45,848 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:45,868 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:45,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:45,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:45,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:45,900 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 01:22:46,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,122 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:46,123 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 01:22:46,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,317 INFO L354 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2021-11-21 01:22:46,317 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 01:22:46,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,509 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:22:46,509 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 15 case distinctions, treesize of input 229 treesize of output 146 [2021-11-21 01:22:46,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,688 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:22:46,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 133 [2021-11-21 01:22:46,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,896 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:22:46,896 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 245 treesize of output 167 [2021-11-21 01:22:46,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:46,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:46,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:47,012 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-21 01:22:47,013 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 262 treesize of output 147 [2021-11-21 01:22:47,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:47,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:47,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:47,280 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:47,280 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 01:22:47,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:47,334 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:47,907 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:22:48,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:22:48,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:22:48,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-21 01:22:48,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261969197] [2021-11-21 01:22:48,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:22:48,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:22:48,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:22:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:22:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:22:48,374 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:22:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:22:48,844 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-11-21 01:22:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:22:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 01:22:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:22:48,845 INFO L225 Difference]: With dead ends: 65 [2021-11-21 01:22:48,846 INFO L226 Difference]: Without dead ends: 52 [2021-11-21 01:22:48,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:22:48,847 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:22:48,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:22:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-21 01:22:48,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 27. [2021-11-21 01:22:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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 01:22:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-21 01:22:48,859 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2021-11-21 01:22:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:22:48,859 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-21 01:22:48,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:22:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-21 01:22:48,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:22:48,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:22:48,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:22:48,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:22:49,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 01:22:49,088 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:22:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:22:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1125006602, now seen corresponding path program 2 times [2021-11-21 01:22:49,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:22:49,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748204161] [2021-11-21 01:22:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:22:49,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:22:49,108 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:22:49,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601903581] [2021-11-21 01:22:49,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:22:49,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:22:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:22:49,110 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:22:49,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a99e132-627f-4c53-9c64-b83648371e83/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 01:22:49,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:22:49,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:22:49,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-21 01:22:49,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:22:49,480 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:22:49,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-21 01:22:49,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2021-11-21 01:22:49,574 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-21 01:22:49,575 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 1 case distinctions, treesize of input 41 treesize of output 42 [2021-11-21 01:22:49,706 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-21 01:22:49,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 56 [2021-11-21 01:22:49,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:49,975 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-21 01:22:49,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 70 [2021-11-21 01:22:50,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,162 INFO L354 Elim1Store]: treesize reduction 260, result has 9.1 percent of original size [2021-11-21 01:22:50,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 92 [2021-11-21 01:22:50,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:50,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:50,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:50,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,225 INFO L354 Elim1Store]: treesize reduction 950, result has 9.6 percent of original size [2021-11-21 01:22:51,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 11 select indices, 11 select index equivalence classes, 13 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 39 case distinctions, treesize of input 366 treesize of output 598 [2021-11-21 01:22:51,400 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:51,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:22:51,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 91 [2021-11-21 01:22:51,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 126 [2021-11-21 01:22:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 83 [2021-11-21 01:22:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:52,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:22:52,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:22:52,502 INFO L354 Elim1Store]: treesize reduction 374, result has 8.1 percent of original size [2021-11-21 01:22:52,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 98 treesize of output 108 [2021-11-21 01:22:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:22:53,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:24:04,886 WARN L227 SmtUtils]: Spent 36.28s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:24:48,604 WARN L227 SmtUtils]: Spent 21.88s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:25:22,757 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse100 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse98 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse56 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse99 (* .cse98 8)) (.cse97 (* .cse100 8))) (let ((.cse24 (< 2147483647 .cse100)) (.cse53 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse97)) (.cse0 (<= .cse100 2147483647)) (.cse38 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse99)) (.cse39 (< 2147483647 .cse98)) (.cse3 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 16)) (.cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16)) (.cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse22 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse99 (- 34359738368))) (.cse9 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 8)) (.cse1 (+ c_~N~0 1)) (.cse40 (<= .cse98 2147483647)) (.cse20 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse97 (- 34359738368))) (.cse19 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse55 (* .cse56 8))) (and (or (let ((.cse54 (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse55)))) (let ((.cse23 (+ 12 .cse54)) (.cse21 (+ 6 .cse54))) (and (or .cse0 (= .cse1 (select (let ((.cse18 (store (store .cse19 .cse20 .cse21) .cse22 .cse23))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18))) (let ((.cse10 (let ((.cse17 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse14 (select .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse12 (store .cse17 .cse7 (+ .cse14 .cse15)))) (store .cse12 .cse13 (+ .cse14 .cse15 (select (select (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)))))))) (let ((.cse6 (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse6 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse4 (select .cse8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse5 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse2 (store .cse8 .cse9 (+ .cse4 .cse5)))) (store .cse2 .cse3 (+ .cse4 .cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~c~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))))))) .cse9))) (or .cse24 (let ((.cse37 (store .cse19 .cse53 .cse21))) (and (or (= .cse1 (select (let ((.cse36 (store .cse37 .cse38 .cse23))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse36))) (let ((.cse30 (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse33 (select .cse35 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse34 (select .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse32 (store .cse35 .cse7 (+ .cse33 .cse34)))) (store .cse32 .cse13 (+ .cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~b~0#1.base| .cse32) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse34))))))) (let ((.cse27 (store .cse31 |c_ULTIMATE.start_main_~b~0#1.base| .cse30))) (let ((.cse29 (select .cse27 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse26 (select .cse29 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse28 (select .cse30 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse25 (store .cse29 .cse9 (+ .cse26 .cse28)))) (store .cse25 .cse3 (+ .cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~c~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse28))))))))) .cse9)) .cse39) (or .cse40 (= .cse1 (select (let ((.cse52 (store .cse37 .cse22 .cse23))) (let ((.cse47 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52))) (let ((.cse46 (let ((.cse51 (select .cse47 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse49 (select .cse51 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse50 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse48 (store .cse51 .cse7 (+ .cse49 .cse50)))) (store .cse48 .cse13 (+ (select (select (store .cse47 |c_ULTIMATE.start_main_~b~0#1.base| .cse48) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse49 .cse50))))))) (let ((.cse42 (store .cse47 |c_ULTIMATE.start_main_~b~0#1.base| .cse46))) (let ((.cse45 (select .cse42 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse43 (select .cse45 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse44 (select .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse41 (store .cse45 .cse9 (+ .cse43 .cse44)))) (store .cse41 .cse3 (+ (select (select (store .cse42 |c_ULTIMATE.start_main_~c~0#1.base| .cse41) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse43 .cse44))))))))) .cse9))))))))) (< 2147483647 .cse56)) (or (let ((.cse96 (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse55 (- 34359738368))))) (let ((.cse70 (+ 12 .cse96)) (.cse69 (+ 6 .cse96))) (and (or .cse24 (= .cse1 (select (let ((.cse68 (store (store .cse19 .cse53 .cse69) .cse38 .cse70))) (let ((.cse63 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68))) (let ((.cse62 (let ((.cse67 (select .cse63 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse65 (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse66 (select .cse67 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse64 (store .cse67 .cse7 (+ .cse65 .cse66)))) (store .cse64 .cse13 (+ (select (select (store .cse63 |c_ULTIMATE.start_main_~b~0#1.base| .cse64) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse65 .cse66))))))) (let ((.cse59 (store .cse63 |c_ULTIMATE.start_main_~b~0#1.base| .cse62))) (let ((.cse61 (select .cse59 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse58 (select .cse61 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse60 (select .cse62 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse57 (store .cse61 .cse9 (+ .cse58 .cse60)))) (store .cse57 .cse3 (+ .cse58 (select (select (store .cse59 |c_ULTIMATE.start_main_~c~0#1.base| .cse57) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse60))))))))) .cse9))) (or .cse0 (let ((.cse83 (store .cse19 .cse20 .cse69))) (and (or (= .cse1 (select (let ((.cse82 (store .cse83 .cse38 .cse70))) (let ((.cse77 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse82))) (let ((.cse76 (let ((.cse81 (select .cse77 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse79 (select .cse82 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse80 (select .cse81 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse78 (store .cse81 .cse7 (+ .cse79 .cse80)))) (store .cse78 .cse13 (+ .cse79 .cse80 (select (select (store .cse77 |c_ULTIMATE.start_main_~b~0#1.base| .cse78) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)))))))) (let ((.cse74 (store .cse77 |c_ULTIMATE.start_main_~b~0#1.base| .cse76))) (let ((.cse75 (select .cse74 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse72 (select .cse75 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse73 (select .cse76 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse71 (store .cse75 .cse9 (+ .cse72 .cse73)))) (store .cse71 .cse3 (+ .cse72 .cse73 (select (select (store .cse74 |c_ULTIMATE.start_main_~c~0#1.base| .cse71) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))))))) .cse9)) .cse39) (or (= (select (let ((.cse95 (store .cse83 .cse22 .cse70))) (let ((.cse90 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse95))) (let ((.cse89 (let ((.cse94 (select .cse90 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse92 (select .cse94 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse93 (select .cse95 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse91 (store .cse94 .cse7 (+ .cse92 .cse93)))) (store .cse91 .cse13 (+ .cse92 (select (select (store .cse90 |c_ULTIMATE.start_main_~b~0#1.base| .cse91) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse93))))))) (let ((.cse86 (store .cse90 |c_ULTIMATE.start_main_~b~0#1.base| .cse89))) (let ((.cse88 (select .cse86 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse85 (select .cse88 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse87 (select .cse89 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse84 (store .cse88 .cse9 (+ .cse85 .cse87)))) (store .cse84 .cse3 (+ .cse85 (select (select (store .cse86 |c_ULTIMATE.start_main_~c~0#1.base| .cse84) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse87))))))))) .cse9) .cse1) .cse40))))))) (<= .cse56 2147483647)))))) is different from true [2021-11-21 01:25:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-21 01:25:22,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:25:22,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748204161] [2021-11-21 01:25:22,775 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:25:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601903581] [2021-11-21 01:25:22,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601903581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:25:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317433002] [2021-11-21 01:25:22,778 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-21 01:25:22,779 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:25:22,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:25:22,780 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:25:22,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:25:23,041 INFO L354 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2021-11-21 01:25:23,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 63 [2021-11-21 01:25:23,555 INFO L354 Elim1Store]: treesize reduction 185, result has 24.5 percent of original size [2021-11-21 01:25:23,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 76 [2021-11-21 01:25:24,238 INFO L354 Elim1Store]: treesize reduction 251, result has 19.8 percent of original size [2021-11-21 01:25:24,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 105 [2021-11-21 01:25:24,530 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:25:24,533 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-21 01:25:24,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,587 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 01:25:24,612 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:24,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:24,941 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:25:24,941 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 01:25:25,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,056 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 01:25:25,122 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,242 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 181 treesize of output 107 [2021-11-21 01:25:25,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,333 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:25:25,334 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 82 [2021-11-21 01:25:25,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,495 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 01:25:25,517 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:25,543 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:25,809 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:25:25,809 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 01:25:25,825 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:25,835 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:25,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:25,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,101 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:26,101 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 01:25:26,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,324 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:26,325 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 329 treesize of output 190 [2021-11-21 01:25:26,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:26,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,776 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:26,776 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 366 treesize of output 232 [2021-11-21 01:25:26,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:26,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:26,943 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:26,944 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 305 treesize of output 180 [2021-11-21 01:25:27,207 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:27,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:27,259 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:25:27,259 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 01:25:27,295 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:27,513 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:25:27,513 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 01:25:27,533 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:27,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:27,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:27,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:27,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:27,888 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:27,888 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 01:25:28,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,198 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:28,198 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 329 treesize of output 206 [2021-11-21 01:25:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,559 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:28,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 329 treesize of output 207 [2021-11-21 01:25:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:28,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:28,729 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 01:25:28,730 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 311 treesize of output 187 [2021-11-21 01:25:28,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:28,982 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:25:29,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:25:29,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:25:29,014 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:25:29,015 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 01:25:31,637 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:25:37,225 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:25:37,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:25:37,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-11-21 01:25:37,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179990110] [2021-11-21 01:25:37,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:25:37,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 01:25:37,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:25:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 01:25:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=744, Unknown=5, NotChecked=56, Total=930 [2021-11-21 01:25:37,228 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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 01:25:40,157 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse100 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse98 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse56 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse99 (* .cse98 8)) (.cse97 (* .cse100 8))) (let ((.cse24 (< 2147483647 .cse100)) (.cse53 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse97)) (.cse0 (<= .cse100 2147483647)) (.cse38 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse99)) (.cse39 (< 2147483647 .cse98)) (.cse3 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 16)) (.cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16)) (.cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse22 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse99 (- 34359738368))) (.cse9 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 8)) (.cse1 (+ c_~N~0 1)) (.cse40 (<= .cse98 2147483647)) (.cse20 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse97 (- 34359738368))) (.cse55 (* .cse56 8)) (.cse19 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (or (let ((.cse54 (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse55)))) (let ((.cse23 (+ 12 .cse54)) (.cse21 (+ 6 .cse54))) (and (or .cse0 (= .cse1 (select (let ((.cse18 (store (store .cse19 .cse20 .cse21) .cse22 .cse23))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18))) (let ((.cse10 (let ((.cse17 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse14 (select .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse12 (store .cse17 .cse7 (+ .cse14 .cse15)))) (store .cse12 .cse13 (+ .cse14 .cse15 (select (select (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)))))))) (let ((.cse6 (store .cse11 |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse6 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse4 (select .cse8 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse5 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse2 (store .cse8 .cse9 (+ .cse4 .cse5)))) (store .cse2 .cse3 (+ .cse4 .cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~c~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))))))) .cse9))) (or .cse24 (let ((.cse37 (store .cse19 .cse53 .cse21))) (and (or (= .cse1 (select (let ((.cse36 (store .cse37 .cse38 .cse23))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse36))) (let ((.cse30 (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse33 (select .cse35 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse34 (select .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse32 (store .cse35 .cse7 (+ .cse33 .cse34)))) (store .cse32 .cse13 (+ .cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~b~0#1.base| .cse32) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse34))))))) (let ((.cse27 (store .cse31 |c_ULTIMATE.start_main_~b~0#1.base| .cse30))) (let ((.cse29 (select .cse27 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse26 (select .cse29 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse28 (select .cse30 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse25 (store .cse29 .cse9 (+ .cse26 .cse28)))) (store .cse25 .cse3 (+ .cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~c~0#1.base| .cse25) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse28))))))))) .cse9)) .cse39) (or .cse40 (= .cse1 (select (let ((.cse52 (store .cse37 .cse22 .cse23))) (let ((.cse47 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52))) (let ((.cse46 (let ((.cse51 (select .cse47 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse49 (select .cse51 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse50 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse48 (store .cse51 .cse7 (+ .cse49 .cse50)))) (store .cse48 .cse13 (+ (select (select (store .cse47 |c_ULTIMATE.start_main_~b~0#1.base| .cse48) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse49 .cse50))))))) (let ((.cse42 (store .cse47 |c_ULTIMATE.start_main_~b~0#1.base| .cse46))) (let ((.cse45 (select .cse42 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse43 (select .cse45 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse44 (select .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse41 (store .cse45 .cse9 (+ .cse43 .cse44)))) (store .cse41 .cse3 (+ (select (select (store .cse42 |c_ULTIMATE.start_main_~c~0#1.base| .cse41) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse43 .cse44))))))))) .cse9))))))))) (< 2147483647 .cse56)) (= 1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)) (or (let ((.cse96 (select .cse19 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse55 (- 34359738368))))) (let ((.cse70 (+ 12 .cse96)) (.cse69 (+ 6 .cse96))) (and (or .cse24 (= .cse1 (select (let ((.cse68 (store (store .cse19 .cse53 .cse69) .cse38 .cse70))) (let ((.cse63 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68))) (let ((.cse62 (let ((.cse67 (select .cse63 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse65 (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse66 (select .cse67 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse64 (store .cse67 .cse7 (+ .cse65 .cse66)))) (store .cse64 .cse13 (+ (select (select (store .cse63 |c_ULTIMATE.start_main_~b~0#1.base| .cse64) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse65 .cse66))))))) (let ((.cse59 (store .cse63 |c_ULTIMATE.start_main_~b~0#1.base| .cse62))) (let ((.cse61 (select .cse59 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse58 (select .cse61 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse60 (select .cse62 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse57 (store .cse61 .cse9 (+ .cse58 .cse60)))) (store .cse57 .cse3 (+ .cse58 (select (select (store .cse59 |c_ULTIMATE.start_main_~c~0#1.base| .cse57) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse60))))))))) .cse9))) (or .cse0 (let ((.cse83 (store .cse19 .cse20 .cse69))) (and (or (= .cse1 (select (let ((.cse82 (store .cse83 .cse38 .cse70))) (let ((.cse77 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse82))) (let ((.cse76 (let ((.cse81 (select .cse77 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse79 (select .cse82 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse80 (select .cse81 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse78 (store .cse81 .cse7 (+ .cse79 .cse80)))) (store .cse78 .cse13 (+ .cse79 .cse80 (select (select (store .cse77 |c_ULTIMATE.start_main_~b~0#1.base| .cse78) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16)))))))) (let ((.cse74 (store .cse77 |c_ULTIMATE.start_main_~b~0#1.base| .cse76))) (let ((.cse75 (select .cse74 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse72 (select .cse75 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse73 (select .cse76 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse71 (store .cse75 .cse9 (+ .cse72 .cse73)))) (store .cse71 .cse3 (+ .cse72 .cse73 (select (select (store .cse74 |c_ULTIMATE.start_main_~c~0#1.base| .cse71) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))))))) .cse9)) .cse39) (or (= (select (let ((.cse95 (store .cse83 .cse22 .cse70))) (let ((.cse90 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse95))) (let ((.cse89 (let ((.cse94 (select .cse90 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse92 (select .cse94 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse93 (select .cse95 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse91 (store .cse94 .cse7 (+ .cse92 .cse93)))) (store .cse91 .cse13 (+ .cse92 (select (select (store .cse90 |c_ULTIMATE.start_main_~b~0#1.base| .cse91) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16) .cse93))))))) (let ((.cse86 (store .cse90 |c_ULTIMATE.start_main_~b~0#1.base| .cse89))) (let ((.cse88 (select .cse86 |c_ULTIMATE.start_main_~c~0#1.base|))) (let ((.cse85 (select .cse88 |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse87 (select .cse89 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse84 (store .cse88 .cse9 (+ .cse85 .cse87)))) (store .cse84 .cse3 (+ .cse85 (select (select (store .cse86 |c_ULTIMATE.start_main_~c~0#1.base| .cse84) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse87))))))))) .cse9) .cse1) .cse40))))))) (<= .cse56 2147483647)) (= |c_ULTIMATE.start_main_~i~0#1| 1) (= (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|) 6) (= |c_ULTIMATE.start_main_~c~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~b~0#1.base|)) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (not (= |c_ULTIMATE.start_main_~c~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= c_~N~0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))))) is different from true [2021-11-21 01:25:58,462 WARN L227 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 252 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:26:41,908 WARN L227 SmtUtils]: Spent 25.38s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)