./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:50:19,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:50:19,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:50:19,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:50:19,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:50:19,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:50:19,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:50:19,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:50:19,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:50:19,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:50:19,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:50:19,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:50:19,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:50:19,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:50:19,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:50:19,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:50:19,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:50:19,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:50:19,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:50:19,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:50:19,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:50:19,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:50:19,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:50:19,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:50:19,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:50:19,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:50:19,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:50:19,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:50:19,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:50:19,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:50:19,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:50:19,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:50:19,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:50:19,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:50:19,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:50:19,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:50:19,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:50:19,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:50:19,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:50:19,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:50:19,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:50:19,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:50:19,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:50:19,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:50:19,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:50:19,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:50:19,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:50:19,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:50:19,212 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:50:19,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:50:19,212 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:50:19,213 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:50:19,213 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:50:19,213 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:50:19,214 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:50:19,214 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:50:19,215 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:50:19,216 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:50:19,222 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:50:19,222 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:50:19,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:50:19,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:50:19,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:50:19,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:50:19,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:50:19,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:50:19,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:50:19,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:50:19,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:50:19,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:50:19,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:50:19,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:50:19,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:50:19,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:50:19,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:50:19,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:50:19,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:50:19,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:50:19,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:50:19,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:50:19,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:50:19,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:50:19,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:50:19,233 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_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc91bf2fc8981aab63c1ee768384f1c8f580edfe4618d65089a78f799b6ddb8 [2021-11-20 23:50:19,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:50:19,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:50:19,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:50:19,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:50:19,570 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:50:19,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/reducercommutativity/rangesum.i [2021-11-20 23:50:19,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/data/c97f3d70b/af2fcac390e14d7c811f7013e7587f5e/FLAGbc0e9d074 [2021-11-20 23:50:20,115 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:50:20,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/sv-benchmarks/c/reducercommutativity/rangesum.i [2021-11-20 23:50:20,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/data/c97f3d70b/af2fcac390e14d7c811f7013e7587f5e/FLAGbc0e9d074 [2021-11-20 23:50:20,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/data/c97f3d70b/af2fcac390e14d7c811f7013e7587f5e [2021-11-20 23:50:20,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:50:20,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:50:20,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:50:20,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:50:20,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:50:20,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4289e01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20, skipping insertion in model container [2021-11-20 23:50:20,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:50:20,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:50:20,753 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_6d5de72a-de15-4e33-a7f4-a6dbadff908c/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2021-11-20 23:50:20,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:50:20,775 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:50:20,816 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_6d5de72a-de15-4e33-a7f4-a6dbadff908c/sv-benchmarks/c/reducercommutativity/rangesum.i[1544,1557] [2021-11-20 23:50:20,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:50:20,844 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:50:20,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20 WrapperNode [2021-11-20 23:50:20,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:50:20,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:50:20,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:50:20,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:50:20,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,906 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2021-11-20 23:50:20,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:50:20,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:50:20,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:50:20,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:50:20,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:50:20,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:50:20,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:50:20,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:50:20,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (1/1) ... [2021-11-20 23:50:20,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:50:20,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:21,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:50:21,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:50:21,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:50:21,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:50:21,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:50:21,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:50:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:50:21,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:50:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:50:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2021-11-20 23:50:21,057 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2021-11-20 23:50:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:50:21,145 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:50:21,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:50:21,386 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:50:21,433 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:50:21,433 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:50:21,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:21 BoogieIcfgContainer [2021-11-20 23:50:21,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:50:21,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:50:21,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:50:21,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:50:21,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:50:20" (1/3) ... [2021-11-20 23:50:21,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ef8dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:21, skipping insertion in model container [2021-11-20 23:50:21,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:20" (2/3) ... [2021-11-20 23:50:21,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ef8dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:50:21, skipping insertion in model container [2021-11-20 23:50:21,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:50:21" (3/3) ... [2021-11-20 23:50:21,446 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum.i [2021-11-20 23:50:21,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:50:21,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:50:21,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:50:21,511 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 [2021-11-20 23:50:21,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:50:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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) [2021-11-20 23:50:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 23:50:21,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:21,536 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:21,537 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash 890449984, now seen corresponding path program 1 times [2021-11-20 23:50:21,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:21,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106514942] [2021-11-20 23:50:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:21,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:21,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:21,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106514942] [2021-11-20 23:50:21,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 23:50:21,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579221097] [2021-11-20 23:50:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:21,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:21,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:21,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:50:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:21,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:50:21,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 23:50:22,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:50:22,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579221097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:22,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:50:22,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:50:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14637792] [2021-11-20 23:50:22,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:22,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:50:22,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:50:22,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:22,119 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-20 23:50:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:22,165 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2021-11-20 23:50:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:50:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 21 [2021-11-20 23:50:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:22,176 INFO L225 Difference]: With dead ends: 36 [2021-11-20 23:50:22,176 INFO L226 Difference]: Without dead ends: 17 [2021-11-20 23:50:22,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:50:22,184 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:22,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:50:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-20 23:50:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-20 23:50:22,222 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) [2021-11-20 23:50:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-11-20 23:50:22,224 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2021-11-20 23:50:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:22,225 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-11-20 23:50:22,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-20 23:50:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-11-20 23:50:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 23:50:22,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:22,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:22,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:22,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:50:22,442 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash -857535421, now seen corresponding path program 1 times [2021-11-20 23:50:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:22,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490331032] [2021-11-20 23:50:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:22,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:22,480 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:22,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480892699] [2021-11-20 23:50:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:22,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:22,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:22,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:22,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:50:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:22,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:50:22,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 23:50:22,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:50:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 23:50:22,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:22,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490331032] [2021-11-20 23:50:22,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:22,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480892699] [2021-11-20 23:50:22,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480892699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:50:22,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877499708] [2021-11-20 23:50:22,847 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-20 23:50:22,853 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:50:22,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:50:22,865 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:50:22,866 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:50:23,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:23,038 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-11-20 23:50:23,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2021-11-20 23:50:23,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:23,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:23,106 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:50:23,107 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 [2021-11-20 23:50:23,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:23,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:50:23,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:23,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:23,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:23,541 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:50:23,542 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 226 treesize of output 214 [2021-11-20 23:50:23,990 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 25 treesize of output 21 [2021-11-20 23:50:24,342 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 20 for LOIs [2021-11-20 23:50:24,468 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:50:24,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1877499708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:50:24,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:50:24,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4] total 11 [2021-11-20 23:50:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197289190] [2021-11-20 23:50:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:50:24,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:50:24,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:50:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:50:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:50:24,652 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:50:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:50:24,856 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2021-11-20 23:50:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:50:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 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 22 [2021-11-20 23:50:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:50:24,858 INFO L225 Difference]: With dead ends: 30 [2021-11-20 23:50:24,858 INFO L226 Difference]: Without dead ends: 18 [2021-11-20 23:50:24,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:50:24,860 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:50:24,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 12 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:50:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-20 23:50:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-20 23:50:24,867 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) [2021-11-20 23:50:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-20 23:50:24,868 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 22 [2021-11-20 23:50:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:50:24,868 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-20 23:50:24,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 23:50:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-20 23:50:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 23:50:24,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:50:24,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:50:24,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:50:25,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:25,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:50:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:50:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash -235427948, now seen corresponding path program 1 times [2021-11-20 23:50:25,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:50:25,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838916621] [2021-11-20 23:50:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:25,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:50:25,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:50:25,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54507293] [2021-11-20 23:50:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:50:25,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:50:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:25,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:50:25,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:50:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:50:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:50:25,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:50:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:50:25,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:50:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 23:50:25,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:50:25,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838916621] [2021-11-20 23:50:25,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:50:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54507293] [2021-11-20 23:50:25,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54507293] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:50:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [280048938] [2021-11-20 23:50:25,308 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-20 23:50:25,308 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:50:25,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:50:25,309 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:50:25,309 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:50:25,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:25,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:25,383 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:50:25,383 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 [2021-11-20 23:50:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:25,437 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 0 case distinctions, treesize of input 19 treesize of output 24 [2021-11-20 23:50:25,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:25,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2021-11-20 23:50:25,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:25,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:25,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:50:25,701 INFO L354 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2021-11-20 23:50:25,702 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 226 treesize of output 214 [2021-11-20 23:50:26,057 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 25 treesize of output 21 [2021-11-20 23:51:10,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:51:10,800 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 [2021-11-20 23:54:55,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:54:55,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-11-20 23:57:56,125 INFO L197 IcfgInterpreter]: Interpreting procedure rangesum with input of size 24 for LOIs [2021-11-20 23:57:59,113 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:58:09,207 WARN L227 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 142 DAG size of output: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:18,648 WARN L227 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 122 DAG size of output: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:29,054 WARN L227 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 124 DAG size of output: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:50,180 WARN L227 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 137 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 23:58:50,181 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:58:50,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 23:58:50,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-20 23:58:50,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827320461] [2021-11-20 23:58:50,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 23:58:50,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:58:50,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:58:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:58:50,184 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-20 23:58:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:50,228 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2021-11-20 23:58:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:58:50,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 [2021-11-20 23:58:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:50,230 INFO L225 Difference]: With dead ends: 33 [2021-11-20 23:58:50,231 INFO L226 Difference]: Without dead ends: 19 [2021-11-20 23:58:50,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-11-20 23:58:50,232 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:50,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:58:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-20 23:58:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-20 23:58:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-11-20 23:58:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-20 23:58:50,240 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 25 [2021-11-20 23:58:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:50,240 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-20 23:58:50,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-20 23:58:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-20 23:58:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 23:58:50,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:50,242 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:50,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:58:50,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:58:50,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:58:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash 648268311, now seen corresponding path program 2 times [2021-11-20 23:58:50,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:50,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18520353] [2021-11-20 23:58:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:50,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:50,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:58:50,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149791628] [2021-11-20 23:58:50,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:58:50,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:58:50,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:58:50,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:58:50,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:58:50,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 23:58:50,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:58:50,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:58:50,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:58:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 23:58:50,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:58:50,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:50,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18520353] [2021-11-20 23:58:50,662 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:58:50,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149791628] [2021-11-20 23:58:50,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149791628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:50,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:50,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:58:50,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776396697] [2021-11-20 23:58:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:50,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:58:50,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:58:50,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:58:50,663 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-20 23:58:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:50,705 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-20 23:58:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:58:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 26 [2021-11-20 23:58:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:50,707 INFO L225 Difference]: With dead ends: 29 [2021-11-20 23:58:50,707 INFO L226 Difference]: Without dead ends: 20 [2021-11-20 23:58:50,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:58:50,709 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:50,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:58:50,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-20 23:58:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-20 23:58:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2021-11-20 23:58:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-11-20 23:58:50,718 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 26 [2021-11-20 23:58:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:50,719 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-11-20 23:58:50,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-11-20 23:58:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-20 23:58:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 23:58:50,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:50,721 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:50,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:58:50,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:58:50,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:58:50,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1533229909, now seen corresponding path program 1 times [2021-11-20 23:58:50,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:50,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722667153] [2021-11-20 23:58:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:50,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:50,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:58:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735023733] [2021-11-20 23:58:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:50,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:58:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:58:50,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:58:50,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d5de72a-de15-4e33-a7f4-a6dbadff908c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:58:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:51,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:58:51,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:58:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 23:58:51,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:58:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 23:58:51,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:51,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722667153] [2021-11-20 23:58:51,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:58:51,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735023733] [2021-11-20 23:58:51,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735023733] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:58:51,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1139731913] [2021-11-20 23:58:51,259 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-20 23:58:51,260 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:58:51,260 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:58:51,260 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:58:51,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:58:51,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:51,364 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-11-20 23:58:51,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 28 [2021-11-20 23:58:51,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:51,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:51,413 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-20 23:58:51,413 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 [2021-11-20 23:58:51,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:51,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 23:58:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:58:51,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:58:51,685 INFO L354 Elim1Store]: treesize reduction 62, result has 25.3 percent of original size [2021-11-20 23:58:51,686 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 216 treesize of output 215 [2021-11-20 23:58:52,279 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 25 treesize of output 21 [2021-11-21 00:00:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:08,461 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 [2021-11-21 00:03:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:10,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:10,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:03:10,409 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 [2021-11-21 00:03:10,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:10,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:10,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:10,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:10,470 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-21 00:03:10,470 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 62 treesize of output 54 [2021-11-21 00:03:10,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:10,574 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 [2021-11-21 00:03:10,656 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