./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/avg20-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/avg20-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 61bc8e70ac867c6ac52806e5ae8f7e7cefd73775be941aab831dd9bf86f7dc88 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:24:22,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:24:22,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:24:22,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:24:22,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:24:22,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:24:22,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:24:22,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:24:22,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:24:23,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:24:23,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:24:23,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:24:23,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:24:23,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:24:23,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:24:23,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:24:23,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:24:23,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:24:23,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:24:23,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:24:23,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:24:23,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:24:23,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:24:23,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:24:23,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:24:23,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:24:23,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:24:23,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:24:23,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:24:23,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:24:23,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:24:23,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:24:23,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:24:23,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:24:23,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:24:23,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:24:23,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:24:23,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:24:23,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:24:23,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:24:23,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:24:23,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:24:23,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:24:23,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:24:23,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:24:23,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:24:23,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:24:23,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:24:23,092 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:24:23,092 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:24:23,093 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:24:23,093 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:24:23,093 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:24:23,093 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:24:23,094 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:24:23,094 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:24:23,094 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:24:23,094 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:24:23,095 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:24:23,095 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:24:23,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:24:23,096 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:24:23,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:24:23,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:24:23,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:24:23,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:24:23,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:24:23,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:24:23,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:24:23,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:24:23,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:24:23,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:24:23,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:24:23,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:24:23,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:24:23,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:24:23,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:24:23,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:24:23,101 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:24:23,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:24:23,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:24:23,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:24:23,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:24:23,102 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_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61bc8e70ac867c6ac52806e5ae8f7e7cefd73775be941aab831dd9bf86f7dc88 [2021-11-25 20:24:23,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:24:23,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:24:23,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:24:23,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:24:23,397 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:24:23,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/reducercommutativity/avg20-2.i [2021-11-25 20:24:23,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/data/0843583ce/c0fa89dac6924df4977392203dae433f/FLAG2d11179ed [2021-11-25 20:24:23,970 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:24:23,971 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/sv-benchmarks/c/reducercommutativity/avg20-2.i [2021-11-25 20:24:23,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/data/0843583ce/c0fa89dac6924df4977392203dae433f/FLAG2d11179ed [2021-11-25 20:24:24,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/data/0843583ce/c0fa89dac6924df4977392203dae433f [2021-11-25 20:24:24,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:24:24,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:24:24,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:24:24,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:24:24,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:24:24,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d27230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24, skipping insertion in model container [2021-11-25 20:24:24,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:24:24,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:24:24,606 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_0491123e-bf0f-4d94-a50b-451ae16f9733/sv-benchmarks/c/reducercommutativity/avg20-2.i[1282,1295] [2021-11-25 20:24:24,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:24,623 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:24:24,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/sv-benchmarks/c/reducercommutativity/avg20-2.i[1282,1295] [2021-11-25 20:24:24,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:24:24,681 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:24:24,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24 WrapperNode [2021-11-25 20:24:24,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:24:24,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:24,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:24:24,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:24:24,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,734 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2021-11-25 20:24:24,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:24:24,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:24:24,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:24:24,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:24:24,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:24:24,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:24:24,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:24:24,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:24:24,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (1/1) ... [2021-11-25 20:24:24,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:24:24,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:24,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:24:24,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:24:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:24:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:24:24,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:24:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:24:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2021-11-25 20:24:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2021-11-25 20:24:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:24:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:24:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:24:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:24:24,947 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:24:24,948 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:24:25,117 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:24:25,197 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:24:25,198 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:24:25,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:25 BoogieIcfgContainer [2021-11-25 20:24:25,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:24:25,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:24:25,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:24:25,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:24:25,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:24:24" (1/3) ... [2021-11-25 20:24:25,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7203c190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:25, skipping insertion in model container [2021-11-25 20:24:25,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:24:24" (2/3) ... [2021-11-25 20:24:25,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7203c190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:24:25, skipping insertion in model container [2021-11-25 20:24:25,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:24:25" (3/3) ... [2021-11-25 20:24:25,218 INFO L111 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2021-11-25 20:24:25,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:24:25,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:24:25,282 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:24:25,289 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:24:25,290 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:24:25,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:24:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 20:24:25,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:25,314 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:25,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:25,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1847977284, now seen corresponding path program 1 times [2021-11-25 20:24:25,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:25,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947908927] [2021-11-25 20:24:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:25,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 20:24:25,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:25,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947908927] [2021-11-25 20:24:25,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947908927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:25,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:25,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:25,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544961885] [2021-11-25 20:24:25,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:25,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:25,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:25,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:25,636 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 20:24:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:25,699 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-25 20:24:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:25,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-11-25 20:24:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:25,715 INFO L225 Difference]: With dead ends: 33 [2021-11-25 20:24:25,715 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 20:24:25,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:25,728 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:25,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:24:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 20:24:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 20:24:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:24:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-11-25 20:24:25,781 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2021-11-25 20:24:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:25,781 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-11-25 20:24:25,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-25 20:24:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-11-25 20:24:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:24:25,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:25,787 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:25,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:24:25,788 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1923649121, now seen corresponding path program 1 times [2021-11-25 20:24:25,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:25,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811602642] [2021-11-25 20:24:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:25,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 20:24:25,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:25,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811602642] [2021-11-25 20:24:25,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811602642] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:24:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784203700] [2021-11-25 20:24:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:25,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:24:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:25,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:24:25,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:24:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:26,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:24:26,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:24:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:24:26,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:24:26,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784203700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:26,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:24:26,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:24:26,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928314334] [2021-11-25 20:24:26,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:26,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:26,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:26,136 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 20:24:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:26,170 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-25 20:24:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:26,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2021-11-25 20:24:26,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:26,174 INFO L225 Difference]: With dead ends: 29 [2021-11-25 20:24:26,179 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 20:24:26,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:26,182 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:26,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:24:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 20:24:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 20:24:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:24:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-25 20:24:26,191 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-25 20:24:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:26,191 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-25 20:24:26,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 20:24:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-25 20:24:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 20:24:26,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:26,193 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:26,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:24:26,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:24:26,410 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -55252021, now seen corresponding path program 1 times [2021-11-25 20:24:26,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:26,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153633390] [2021-11-25 20:24:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:26,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:24:26,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:26,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153633390] [2021-11-25 20:24:26,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153633390] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:24:26,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901058998] [2021-11-25 20:24:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:26,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:24:26,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:26,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:24:26,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:24:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:26,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:24:26,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:24:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 20:24:26,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:24:26,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901058998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:26,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:24:26,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:24:26,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27762493] [2021-11-25 20:24:26,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:26,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:26,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:26,683 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 20:24:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:26,709 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-25 20:24:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:26,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-11-25 20:24:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:26,711 INFO L225 Difference]: With dead ends: 27 [2021-11-25 20:24:26,712 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 20:24:26,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:24:26,718 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:26,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:24:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 20:24:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-25 20:24:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:24:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-25 20:24:26,727 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2021-11-25 20:24:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:26,729 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-25 20:24:26,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-25 20:24:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-25 20:24:26,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 20:24:26,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:26,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:24:26,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:24:26,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-25 20:24:26,944 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1228256621, now seen corresponding path program 1 times [2021-11-25 20:24:26,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:26,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727795767] [2021-11-25 20:24:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:26,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 20:24:27,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:27,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727795767] [2021-11-25 20:24:27,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727795767] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:24:27,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947507509] [2021-11-25 20:24:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:27,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:24:27,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:27,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:24:27,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:24:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:27,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:24:27,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:24:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 20:24:27,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:24:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-25 20:24:27,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947507509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:24:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2023624005] [2021-11-25 20:24:27,294 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:24:27,294 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:24:27,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:24:27,305 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:24:27,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:24:27,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:27,439 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:24:27,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:24:27,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:27,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 20:24:27,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:27,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:24:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:27,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:24:27,663 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 20:24:27,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 20:24:27,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:24:27,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:27,981 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:24:28,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:28,168 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 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 20:24:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:28,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:28,242 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 20:24:28,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 20:24:28,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:24:28,322 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 24 treesize of output 24 [2021-11-25 20:24:28,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:24:28,541 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:24:28,589 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:24:53,227 WARN L227 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 70 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:25:19,751 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (exists ((v_avg_~ret~0_BEFORE_RETURN_6 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_6 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_6 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_6 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_6 20)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_6 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_6 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_6 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_6 20)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_6 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_6 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_6 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_6 20)) 4294967296) (- 4294967296))))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 20:25:19,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:25:19,752 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:25:19,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2021-11-25 20:25:19,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831593437] [2021-11-25 20:25:19,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:25:19,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:25:19,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:25:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2021-11-25 20:25:19,754 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:25:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:19,783 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-25 20:25:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:25:19,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2021-11-25 20:25:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:19,785 INFO L225 Difference]: With dead ends: 36 [2021-11-25 20:25:19,785 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 20:25:19,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2021-11-25 20:25:19,787 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:19,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:25:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 20:25:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 20:25:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:25:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-25 20:25:19,792 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2021-11-25 20:25:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:19,793 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-25 20:25:19,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:25:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-25 20:25:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:25:19,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:19,794 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:25:19,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:25:19,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:19,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:19,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2048081288, now seen corresponding path program 2 times [2021-11-25 20:25:19,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:19,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112243972] [2021-11-25 20:25:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:19,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:25:20,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:20,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112243972] [2021-11-25 20:25:20,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112243972] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:25:20,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630732695] [2021-11-25 20:25:20,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:25:20,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:25:20,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:25:20,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:25:20,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:25:20,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:25:20,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:25:20,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:25:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:25:20,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:25:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-25 20:25:20,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630732695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:25:20,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [281811666] [2021-11-25 20:25:20,328 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:25:20,328 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:25:20,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:25:20,329 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:25:20,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:25:20,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,358 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:25:20,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 20:25:20,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,382 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:25:20,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:25:20,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 20:25:20,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,476 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 20:25:20,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 20:25:20,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:25:20,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,597 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:25:20,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:25:20,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 20:25:20,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,794 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:25:20,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 20:25:20,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:25:20,833 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 24 treesize of output 24 [2021-11-25 20:25:20,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:25:21,001 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:25:21,035 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:26:06,068 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_avg_~ret~0_BEFORE_RETURN_12 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_12 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_12 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_12 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_12 20)) 4294967296) 2147483647) (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_12 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_12 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_12 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_12 20)) 4294967296) (+ (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_12 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_12 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_12 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_12 20)) 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:26:06,068 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:26:06,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:26:06,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-25 20:26:06,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949604588] [2021-11-25 20:26:06,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:26:06,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:26:06,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:06,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:26:06,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2021-11-25 20:26:06,070 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:26:06,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:06,100 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-11-25 20:26:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:26:06,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2021-11-25 20:26:06,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:06,102 INFO L225 Difference]: With dead ends: 38 [2021-11-25 20:26:06,102 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 20:26:06,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=81, Invalid=287, Unknown=12, NotChecked=0, Total=380 [2021-11-25 20:26:06,103 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:06,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:26:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 20:26:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-25 20:26:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:26:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-25 20:26:06,109 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2021-11-25 20:26:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:06,110 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-25 20:26:06,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:26:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-25 20:26:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 20:26:06,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:06,112 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:06,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:06,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:06,326 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:06,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -174007092, now seen corresponding path program 3 times [2021-11-25 20:26:06,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:06,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778808428] [2021-11-25 20:26:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:06,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-25 20:26:06,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:06,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778808428] [2021-11-25 20:26:06,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778808428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:06,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892425111] [2021-11-25 20:26:06,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:26:06,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:06,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:06,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:26:06,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:26:06,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:26:06,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:26:06,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:26:06,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:26:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 20:26:06,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892425111] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:26:06,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1557472955] [2021-11-25 20:26:06,796 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:26:06,796 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:26:06,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:26:06,797 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:26:06,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:26:06,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:06,826 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:26:06,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:26:06,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:06,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 20:26:06,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:06,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:26:06,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:06,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:26:06,936 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 20:26:06,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 20:26:07,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:26:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,092 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:26:07,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:26:07,212 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 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 20:26:07,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,264 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:26:07,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 20:26:07,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:07,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 20:26:07,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:26:07,454 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:26:07,490 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:26:52,506 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (exists ((v_avg_~ret~0_BEFORE_RETURN_18 Int)) (= (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_18 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_18 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_18 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_18 20)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_18 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_18 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_18 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_18 20)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_18 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_18 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_18 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_18 20)) 4294967296) (- 4294967296))) |ULTIMATE.start_main_~ret5~0#1|)) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:26:52,506 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:26:52,506 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:26:52,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2021-11-25 20:26:52,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471082387] [2021-11-25 20:26:52,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:26:52,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:26:52,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:26:52,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:26:52,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=559, Unknown=12, NotChecked=0, Total=702 [2021-11-25 20:26:52,509 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 20:26:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:26:52,570 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-25 20:26:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:26:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2021-11-25 20:26:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:26:52,571 INFO L225 Difference]: With dead ends: 49 [2021-11-25 20:26:52,571 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 20:26:52,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=131, Invalid=559, Unknown=12, NotChecked=0, Total=702 [2021-11-25 20:26:52,572 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:26:52,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:26:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 20:26:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 20:26:52,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:26:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-25 20:26:52,578 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2021-11-25 20:26:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:26:52,579 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-25 20:26:52,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-25 20:26:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-25 20:26:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 20:26:52,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:26:52,580 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:26:52,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:26:52,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:52,781 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:26:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:26:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash -849066276, now seen corresponding path program 4 times [2021-11-25 20:26:52,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:26:52,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564125346] [2021-11-25 20:26:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:26:52,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:26:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 20:26:53,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:26:53,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564125346] [2021-11-25 20:26:53,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564125346] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:26:53,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622860379] [2021-11-25 20:26:53,016 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:26:53,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:26:53,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:26:53,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:26:53,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:26:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:26:53,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:26:53,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:26:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 20:26:53,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:26:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 20:26:53,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622860379] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:26:53,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [155920999] [2021-11-25 20:26:53,412 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:26:53,412 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:26:53,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:26:53,412 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:26:53,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:26:53,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,439 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:26:53,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-25 20:26:53,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,466 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:26:53,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:26:53,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 20:26:53,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,554 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 20:26:53,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 20:26:53,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:26:53,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:26:53,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:26:53,750 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 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 20:26:53,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,792 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:26:53,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 20:26:53,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:26:53,817 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 24 treesize of output 24 [2021-11-25 20:26:53,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:26:53,963 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:26:53,992 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:27:38,994 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1572#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_avg_~ret~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_24 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_24 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_24 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_24 20)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_24 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_24 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_24 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_24 20)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_24 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_24 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_24 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_24 20)) 4294967296) (- 4294967296))))) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:27:38,994 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:27:38,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:27:38,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 23 [2021-11-25 20:27:38,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042829245] [2021-11-25 20:27:38,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:27:38,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 20:27:38,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:27:38,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 20:27:38,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=935, Unknown=12, NotChecked=0, Total=1260 [2021-11-25 20:27:38,997 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:27:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:27:39,056 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-11-25 20:27:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:27:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-11-25 20:27:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:27:39,057 INFO L225 Difference]: With dead ends: 60 [2021-11-25 20:27:39,058 INFO L226 Difference]: Without dead ends: 41 [2021-11-25 20:27:39,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=313, Invalid=935, Unknown=12, NotChecked=0, Total=1260 [2021-11-25 20:27:39,060 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:27:39,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:27:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-25 20:27:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-25 20:27:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:27:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-11-25 20:27:39,066 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 44 [2021-11-25 20:27:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:27:39,067 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-11-25 20:27:39,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-25 20:27:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-11-25 20:27:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 20:27:39,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:27:39,069 INFO L514 BasicCegarLoop]: trace histogram [20, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:27:39,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:27:39,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:39,288 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:27:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:27:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1837457924, now seen corresponding path program 5 times [2021-11-25 20:27:39,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:27:39,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045241411] [2021-11-25 20:27:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:27:39,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:27:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:27:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2021-11-25 20:27:39,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:27:39,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045241411] [2021-11-25 20:27:39,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045241411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:27:39,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534452629] [2021-11-25 20:27:39,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:27:39,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:27:39,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:27:39,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:27:39,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:27:39,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:27:39,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:27:39,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 20:27:39,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:27:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-25 20:27:39,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:27:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-25 20:27:39,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534452629] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:27:39,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051332086] [2021-11-25 20:27:39,750 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:27:39,751 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:27:39,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:27:39,751 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:27:39,752 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:27:39,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:39,777 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:27:39,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:27:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:39,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 20:27:39,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:39,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 20:27:39,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:39,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:39,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:39,880 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 20:27:39,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 20:27:39,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:27:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:39,996 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:27:40,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:40,097 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 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 20:27:40,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:40,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:40,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:40,146 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 20:27:40,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 20:27:40,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:27:40,199 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 24 treesize of output 24 [2021-11-25 20:27:40,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:27:40,364 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:27:40,392 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:28:25,372 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2095#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_avg_~ret~0_BEFORE_RETURN_30 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_30 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_30 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_30 20)) 4294967296) 2147483647) (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_30 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_30 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_30 20)) 4294967296) (+ (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_30 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_30 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_30 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_30 20)) 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:28:25,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:28:25,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:28:25,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2021-11-25 20:28:25,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352954436] [2021-11-25 20:28:25,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:28:25,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:28:25,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:28:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:28:25,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=530, Unknown=12, NotChecked=0, Total=650 [2021-11-25 20:28:25,374 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:28:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:28:25,419 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-11-25 20:28:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:28:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2021-11-25 20:28:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:28:25,420 INFO L225 Difference]: With dead ends: 64 [2021-11-25 20:28:25,420 INFO L226 Difference]: Without dead ends: 46 [2021-11-25 20:28:25,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=108, Invalid=530, Unknown=12, NotChecked=0, Total=650 [2021-11-25 20:28:25,425 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:28:25,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:28:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-25 20:28:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-25 20:28:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:28:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-11-25 20:28:25,446 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 54 [2021-11-25 20:28:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:28:25,447 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-11-25 20:28:25,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 20:28:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-11-25 20:28:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 20:28:25,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:28:25,448 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:28:25,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-25 20:28:25,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 20:28:25,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:28:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:28:25,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1701698224, now seen corresponding path program 6 times [2021-11-25 20:28:25,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:28:25,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872971593] [2021-11-25 20:28:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:28:25,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:28:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:28:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-25 20:28:25,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:28:25,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872971593] [2021-11-25 20:28:25,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872971593] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:28:25,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816452185] [2021-11-25 20:28:25,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:28:25,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:28:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:28:25,828 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:28:25,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:28:25,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:28:25,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:28:25,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:28:25,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:28:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 74 proven. 15 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-25 20:28:26,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:28:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-11-25 20:28:26,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816452185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:28:26,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1615305592] [2021-11-25 20:28:26,232 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:28:26,232 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:28:26,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:28:26,233 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:28:26,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:28:26,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,262 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:28:26,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:28:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 20:28:26,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 20:28:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,346 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 20:28:26,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 20:28:26,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:28:26,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,432 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:28:26,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:28:26,549 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 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-25 20:28:26,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,597 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-25 20:28:26,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2021-11-25 20:28:26,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:28:26,624 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 24 treesize of output 24 [2021-11-25 20:28:26,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:28:26,757 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:28:26,786 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:29:09,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2680#(and (exists ((v_avg_~ret~0_BEFORE_RETURN_36 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_36 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_36 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_36 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_36 20)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_36 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_36 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_36 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_36 20)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_36 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_36 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_36 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_36 20)) 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:29:09,697 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:29:09,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:29:09,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-25 20:29:09,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783044236] [2021-11-25 20:29:09,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:29:09,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 20:29:09,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:09,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 20:29:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=579, Unknown=12, NotChecked=0, Total=756 [2021-11-25 20:29:09,700 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:29:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:29:09,778 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2021-11-25 20:29:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:29:09,778 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2021-11-25 20:29:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:29:09,779 INFO L225 Difference]: With dead ends: 76 [2021-11-25 20:29:09,779 INFO L226 Difference]: Without dead ends: 53 [2021-11-25 20:29:09,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=165, Invalid=579, Unknown=12, NotChecked=0, Total=756 [2021-11-25 20:29:09,781 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:29:09,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:29:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-25 20:29:09,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-25 20:29:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0625) internal successors, (51), 48 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:29:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-25 20:29:09,789 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 61 [2021-11-25 20:29:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:29:09,789 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-25 20:29:09,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:29:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-25 20:29:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 20:29:09,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:29:09,791 INFO L514 BasicCegarLoop]: trace histogram [36, 20, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:29:09,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:29:10,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:29:10,020 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:29:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:29:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2038372348, now seen corresponding path program 7 times [2021-11-25 20:29:10,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:29:10,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560178026] [2021-11-25 20:29:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:10,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:29:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 418 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-11-25 20:29:10,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:29:10,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560178026] [2021-11-25 20:29:10,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560178026] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:29:10,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507910449] [2021-11-25 20:29:10,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:29:10,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:29:10,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:29:10,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:29:10,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 20:29:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:10,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-25 20:29:10,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:29:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 340 proven. 78 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-11-25 20:29:10,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:29:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 0 proven. 418 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-11-25 20:29:10,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507910449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:29:10,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1007318186] [2021-11-25 20:29:10,765 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:29:10,765 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:29:10,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:29:10,766 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:29:10,766 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:29:10,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:10,801 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:29:10,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:29:10,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:10,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 20:29:10,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:10,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:29:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:10,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:29:10,891 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-25 20:29:10,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 190 treesize of output 189 [2021-11-25 20:29:10,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:29:11,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:11,044 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:29:11,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:11,143 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 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 20:29:11,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:11,198 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 20:29:11,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 20:29:11,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:11,251 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 24 treesize of output 24 [2021-11-25 20:29:11,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:29:11,386 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:29:11,435 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:29:54,389 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3437#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_avg_~ret~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_41 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_41 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_41 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_41 20)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_41 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_41 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_41 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_41 20)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_41 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_41 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_41 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_41 20)) 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:29:54,389 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:29:54,389 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:29:54,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2021-11-25 20:29:54,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881190264] [2021-11-25 20:29:54,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:29:54,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 20:29:54,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:29:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 20:29:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=935, Unknown=12, NotChecked=0, Total=1260 [2021-11-25 20:29:54,391 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:29:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:29:54,444 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2021-11-25 20:29:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:29:54,445 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2021-11-25 20:29:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:29:54,446 INFO L225 Difference]: With dead ends: 91 [2021-11-25 20:29:54,446 INFO L226 Difference]: Without dead ends: 61 [2021-11-25 20:29:54,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=313, Invalid=935, Unknown=12, NotChecked=0, Total=1260 [2021-11-25 20:29:54,448 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:29:54,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:29:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-25 20:29:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-25 20:29:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:29:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-11-25 20:29:54,456 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 82 [2021-11-25 20:29:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:29:54,456 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-11-25 20:29:54,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 20:29:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-11-25 20:29:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-25 20:29:54,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:29:54,458 INFO L514 BasicCegarLoop]: trace histogram [60, 20, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:29:54,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:29:54,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 20:29:54,675 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:29:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:29:54,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1353703940, now seen corresponding path program 8 times [2021-11-25 20:29:54,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:29:54,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404117452] [2021-11-25 20:29:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:29:54,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:29:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:29:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2021-11-25 20:29:54,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:29:54,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404117452] [2021-11-25 20:29:54,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404117452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:29:54,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520381008] [2021-11-25 20:29:54,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:29:54,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:29:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:29:54,896 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:29:54,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:29:55,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 20:29:55,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:29:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:29:55,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:29:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 886 proven. 21 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2021-11-25 20:29:55,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:29:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2021-11-25 20:29:55,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520381008] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:29:55,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [982845900] [2021-11-25 20:29:55,484 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:29:55,484 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:29:55,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:29:55,485 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:29:55,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:29:55,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,516 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:29:55,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:29:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 20:29:55,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 20:29:55,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,611 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 20:29:55,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 20:29:55,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:29:55,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,699 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:29:55,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,803 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 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 20:29:55,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,857 INFO L354 Elim1Store]: treesize reduction 60, result has 32.6 percent of original size [2021-11-25 20:29:55,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2021-11-25 20:29:55,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:29:55,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 20:29:55,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:29:56,046 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:29:56,079 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:30:20,829 WARN L227 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 70 DAG size of output: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:30:47,328 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4385#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (exists ((v_avg_~ret~0_BEFORE_RETURN_47 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_47 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_47 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_47 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_47 20)) 4294967296) 2147483647) (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_47 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_47 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_47 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_47 20)) 4294967296) (+ (mod (ite (and (not (= (mod v_avg_~ret~0_BEFORE_RETURN_47 20) 0)) (< v_avg_~ret~0_BEFORE_RETURN_47 0)) (+ (div v_avg_~ret~0_BEFORE_RETURN_47 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_47 20)) 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:30:47,328 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:30:47,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:30:47,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2021-11-25 20:30:47,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96045880] [2021-11-25 20:30:47,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:30:47,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 20:30:47,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:30:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 20:30:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1009, Unknown=12, NotChecked=0, Total=1332 [2021-11-25 20:30:47,331 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 20:30:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:30:47,549 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2021-11-25 20:30:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 20:30:47,550 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 106 [2021-11-25 20:30:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:30:47,551 INFO L225 Difference]: With dead ends: 97 [2021-11-25 20:30:47,551 INFO L226 Difference]: Without dead ends: 69 [2021-11-25 20:30:47,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=430, Invalid=1450, Unknown=12, NotChecked=0, Total=1892 [2021-11-25 20:30:47,553 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:30:47,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:30:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-25 20:30:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-25 20:30:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:30:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-11-25 20:30:47,571 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 106 [2021-11-25 20:30:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:30:47,573 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-11-25 20:30:47,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-25 20:30:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-11-25 20:30:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 20:30:47,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:30:47,580 INFO L514 BasicCegarLoop]: trace histogram [60, 20, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:30:47,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:30:47,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:47,803 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:30:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:30:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1975584252, now seen corresponding path program 9 times [2021-11-25 20:30:47,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:30:47,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155533250] [2021-11-25 20:30:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:30:47,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:30:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:30:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2021-11-25 20:30:48,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:30:48,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155533250] [2021-11-25 20:30:48,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155533250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:30:48,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252585398] [2021-11-25 20:30:48,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:30:48,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:30:48,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:30:48,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:30:48,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 20:30:48,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:30:48,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:30:48,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 20:30:48,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:30:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 886 proven. 105 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2021-11-25 20:30:48,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:30:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2021-11-25 20:30:48,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252585398] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:30:48,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [234047152] [2021-11-25 20:30:48,724 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-25 20:30:48,724 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:30:48,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:30:48,725 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:30:48,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:30:48,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:48,753 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 20:30:48,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 37 [2021-11-25 20:30:48,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:48,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 20:30:48,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:48,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-11-25 20:30:48,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:48,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:48,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:48,836 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-25 20:30:48,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 188 [2021-11-25 20:30:48,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:30:48,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:48,926 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 0 case distinctions, treesize of input 30 treesize of output 20 [2021-11-25 20:30:49,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:49,032 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 0 case distinctions, treesize of input 25 treesize of output 20 [2021-11-25 20:30:49,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:49,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:49,086 INFO L354 Elim1Store]: treesize reduction 65, result has 27.0 percent of original size [2021-11-25 20:30:49,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2021-11-25 20:30:49,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:30:49,133 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 24 treesize of output 24 [2021-11-25 20:30:49,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 20:30:49,276 INFO L197 IcfgInterpreter]: Interpreting procedure avg with input of size 12 for LOIs [2021-11-25 20:30:49,321 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:31:34,321 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5423#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (or (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~1#1|)) (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~1#1|))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 19 |ULTIMATE.start_main_~i~2#1|) (<= 20 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (exists ((v_avg_~ret~0_BEFORE_RETURN_53 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_53 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_53 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_53 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_53 20)) 4294967296) 2147483647) (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_53 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_53 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_53 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_53 20)) 4294967296) (+ (mod (ite (and (< v_avg_~ret~0_BEFORE_RETURN_53 0) (not (= (mod v_avg_~ret~0_BEFORE_RETURN_53 20) 0))) (+ (div v_avg_~ret~0_BEFORE_RETURN_53 20) 1) (div v_avg_~ret~0_BEFORE_RETURN_53 20)) 4294967296) (- 4294967296))))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 76 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 20:31:34,322 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:31:34,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 20:31:34,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2021-11-25 20:31:34,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187239147] [2021-11-25 20:31:34,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 20:31:34,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 20:31:34,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:31:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 20:31:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=887, Unknown=12, NotChecked=0, Total=1190 [2021-11-25 20:31:34,324 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 20:31:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:31:34,374 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2021-11-25 20:31:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 20:31:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 114 [2021-11-25 20:31:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:31:34,376 INFO L225 Difference]: With dead ends: 102 [2021-11-25 20:31:34,376 INFO L226 Difference]: Without dead ends: 74 [2021-11-25 20:31:34,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=291, Invalid=887, Unknown=12, NotChecked=0, Total=1190 [2021-11-25 20:31:34,377 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:31:34,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:31:34,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-25 20:31:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-25 20:31:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-25 20:31:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-11-25 20:31:34,392 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 114 [2021-11-25 20:31:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:31:34,393 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-11-25 20:31:34,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-25 20:31:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-11-25 20:31:34,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-25 20:31:34,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:31:34,397 INFO L514 BasicCegarLoop]: trace histogram [60, 20, 19, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:31:34,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 20:31:34,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 20:31:34,600 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:31:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:31:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash -617336372, now seen corresponding path program 10 times [2021-11-25 20:31:34,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:31:34,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162790274] [2021-11-25 20:31:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:31:34,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:31:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2359 backedges. 2 proven. 2350 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-25 20:33:07,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:33:07,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162790274] [2021-11-25 20:33:07,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162790274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:33:07,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573543214] [2021-11-25 20:33:07,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:33:07,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:33:07,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:33:07,190 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:33:07,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0491123e-bf0f-4d94-a50b-451ae16f9733/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 20:33:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:33:07,563 WARN L261 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 461 conjunts are in the unsatisfiable core [2021-11-25 20:33:07,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:33:14,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 20:33:38,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:33:38,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:33:38,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:33:39,044 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:33:39,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 22 select indices, 22 select index equivalence classes, 191 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 231 case distinctions, treesize of input 4378 treesize of output 1012 [2021-11-25 20:34:42,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:42,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:42,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:43,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:43,547 INFO L354 Elim1Store]: treesize reduction 66, result has 9.6 percent of original size [2021-11-25 20:34:43,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 42 select indices, 42 select index equivalence classes, 190 disjoint index pairs (out of 861 index pairs), introduced 42 new quantified variables, introduced 861 case distinctions, treesize of input 8734 treesize of output 2018