./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/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 1c5ecbc156ef402fa8ca002c27ace1df37fef4394f3f2e7d74e739b1fb38fbd5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:32:09,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:32:09,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:32:09,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:32:09,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:32:09,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:32:09,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:32:09,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:32:09,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:32:09,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:32:09,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:32:09,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:32:09,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:32:09,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:32:09,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:32:09,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:32:09,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:32:09,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:32:09,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:32:09,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:32:09,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:32:09,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:32:09,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:32:09,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:32:09,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:32:09,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:32:09,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:32:09,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:32:09,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:32:09,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:32:09,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:32:09,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:32:09,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:32:09,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:32:09,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:32:09,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:32:09,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:32:09,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:32:09,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:32:09,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:32:09,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:32:09,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:32:09,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:32:09,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:32:09,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:32:09,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:32:09,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:32:09,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:32:09,230 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:32:09,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:32:09,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:32:09,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:32:09,231 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:32:09,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:32:09,232 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:32:09,232 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:32:09,232 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:32:09,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:32:09,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:32:09,233 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:32:09,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:32:09,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:32:09,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:32:09,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:32:09,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:32:09,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:32:09,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:32:09,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:32:09,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:32:09,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:32:09,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:32:09,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:32:09,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:32:09,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:32:09,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:32:09,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:32:09,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:32:09,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:32:09,238 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:32:09,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:32:09,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:32:09,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:32:09,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:32:09,240 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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5ecbc156ef402fa8ca002c27ace1df37fef4394f3f2e7d74e739b1fb38fbd5 [2021-11-21 00:32:09,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:32:09,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:32:09,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:32:09,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:32:09,496 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:32:09,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2021-11-21 00:32:09,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/612aff9ea/64ad10c7f0254159a294cae64c6e2410/FLAGda45b8b0f [2021-11-21 00:32:10,163 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:32:10,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2021-11-21 00:32:10,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/612aff9ea/64ad10c7f0254159a294cae64c6e2410/FLAGda45b8b0f [2021-11-21 00:32:10,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/612aff9ea/64ad10c7f0254159a294cae64c6e2410 [2021-11-21 00:32:10,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:32:10,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:32:10,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:32:10,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:32:10,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:32:10,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:32:10" (1/1) ... [2021-11-21 00:32:10,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e420248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:10, skipping insertion in model container [2021-11-21 00:32:10,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:32:10" (1/1) ... [2021-11-21 00:32:10,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:32:10,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:32:11,023 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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c[65397,65410] [2021-11-21 00:32:11,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:32:11,053 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:32:11,171 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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c[65397,65410] [2021-11-21 00:32:11,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:32:11,204 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:32:11,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11 WrapperNode [2021-11-21 00:32:11,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:32:11,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:32:11,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:32:11,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:32:11,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,325 INFO L137 Inliner]: procedures = 31, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 718 [2021-11-21 00:32:11,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:32:11,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:32:11,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:32:11,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:32:11,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:32:11,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:32:11,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:32:11,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:32:11,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (1/1) ... [2021-11-21 00:32:11,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:32:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:11,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:32:11,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:32:11,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:32:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:32:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:32:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:32:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:32:11,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:32:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:32:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:32:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:32:11,822 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:32:11,824 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:32:11,840 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:32:14,839 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-21 00:32:14,840 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-21 00:32:14,840 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:32:15,349 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:32:15,350 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:32:15,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:32:15 BoogieIcfgContainer [2021-11-21 00:32:15,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:32:15,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:32:15,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:32:15,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:32:15,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:32:10" (1/3) ... [2021-11-21 00:32:15,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34890fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:32:15, skipping insertion in model container [2021-11-21 00:32:15,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:11" (2/3) ... [2021-11-21 00:32:15,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34890fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:32:15, skipping insertion in model container [2021-11-21 00:32:15,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:32:15" (3/3) ... [2021-11-21 00:32:15,367 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-1.c [2021-11-21 00:32:15,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:32:15,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:32:15,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:32:15,445 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:32:15,446 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:32:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 84 states have (on average 1.75) internal successors, (147), 85 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:32:15,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:15,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:15,480 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:15,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash 820023686, now seen corresponding path program 1 times [2021-11-21 00:32:15,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:15,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273255074] [2021-11-21 00:32:15,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:15,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:32:15,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:15,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273255074] [2021-11-21 00:32:15,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273255074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:15,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:15,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:32:15,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046195781] [2021-11-21 00:32:15,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:15,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:15,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:15,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:15,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:15,961 INFO L87 Difference]: Start difference. First operand has 86 states, 84 states have (on average 1.75) internal successors, (147), 85 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:17,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:19,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:19,071 INFO L93 Difference]: Finished difference Result 173 states and 297 transitions. [2021-11-21 00:32:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 00:32:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:19,090 INFO L225 Difference]: With dead ends: 173 [2021-11-21 00:32:19,091 INFO L226 Difference]: Without dead ends: 85 [2021-11-21 00:32:19,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:19,103 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 1 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:19,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 332 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 00:32:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-21 00:32:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-21 00:32:19,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2021-11-21 00:32:19,142 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 19 [2021-11-21 00:32:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:19,142 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2021-11-21 00:32:19,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2021-11-21 00:32:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 00:32:19,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:19,144 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:19,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:32:19,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:19,146 INFO L85 PathProgramCache]: Analyzing trace with hash -44792736, now seen corresponding path program 1 times [2021-11-21 00:32:19,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:19,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606294118] [2021-11-21 00:32:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:19,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:19,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606294118] [2021-11-21 00:32:19,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606294118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:19,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:19,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:32:19,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746167862] [2021-11-21 00:32:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:19,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:19,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:19,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:19,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:19,308 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:21,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:21,637 INFO L93 Difference]: Finished difference Result 166 states and 240 transitions. [2021-11-21 00:32:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:21,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-21 00:32:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:21,640 INFO L225 Difference]: With dead ends: 166 [2021-11-21 00:32:21,641 INFO L226 Difference]: Without dead ends: 164 [2021-11-21 00:32:21,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:21,642 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 87 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:21,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 205 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 00:32:21,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-21 00:32:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2021-11-21 00:32:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.462962962962963) internal successors, (237), 162 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 237 transitions. [2021-11-21 00:32:21,662 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 237 transitions. Word has length 29 [2021-11-21 00:32:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:21,662 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 237 transitions. [2021-11-21 00:32:21,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 237 transitions. [2021-11-21 00:32:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-21 00:32:21,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:21,665 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:21,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:32:21,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 25495204, now seen corresponding path program 1 times [2021-11-21 00:32:21,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:21,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607158002] [2021-11-21 00:32:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:21,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:21,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:21,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607158002] [2021-11-21 00:32:21,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607158002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:21,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:21,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:21,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814852257] [2021-11-21 00:32:21,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:21,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:21,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:21,814 INFO L87 Difference]: Start difference. First operand 163 states and 237 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:23,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:24,358 INFO L93 Difference]: Finished difference Result 272 states and 395 transitions. [2021-11-21 00:32:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:24,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-21 00:32:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:24,362 INFO L225 Difference]: With dead ends: 272 [2021-11-21 00:32:24,362 INFO L226 Difference]: Without dead ends: 190 [2021-11-21 00:32:24,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:24,364 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 18 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:24,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 298 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-21 00:32:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-21 00:32:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2021-11-21 00:32:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.4775280898876404) internal successors, (263), 178 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 263 transitions. [2021-11-21 00:32:24,380 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 263 transitions. Word has length 41 [2021-11-21 00:32:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:24,380 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 263 transitions. [2021-11-21 00:32:24,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 263 transitions. [2021-11-21 00:32:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-21 00:32:24,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:24,384 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:24,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:32:24,384 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1232579582, now seen corresponding path program 2 times [2021-11-21 00:32:24,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:24,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116683496] [2021-11-21 00:32:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:24,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:24,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:24,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116683496] [2021-11-21 00:32:24,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116683496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:24,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:24,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:24,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541913195] [2021-11-21 00:32:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:24,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:24,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:24,499 INFO L87 Difference]: Start difference. First operand 179 states and 263 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:26,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:27,069 INFO L93 Difference]: Finished difference Result 288 states and 420 transitions. [2021-11-21 00:32:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:27,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-21 00:32:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:27,075 INFO L225 Difference]: With dead ends: 288 [2021-11-21 00:32:27,075 INFO L226 Difference]: Without dead ends: 190 [2021-11-21 00:32:27,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:27,077 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 25 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:27,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 302 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-21 00:32:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-21 00:32:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2021-11-21 00:32:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.4719101123595506) internal successors, (262), 178 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 262 transitions. [2021-11-21 00:32:27,093 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 262 transitions. Word has length 51 [2021-11-21 00:32:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:27,094 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 262 transitions. [2021-11-21 00:32:27,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 262 transitions. [2021-11-21 00:32:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-21 00:32:27,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:27,097 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:27,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:32:27,098 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:27,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1000884126, now seen corresponding path program 1 times [2021-11-21 00:32:27,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:27,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919754702] [2021-11-21 00:32:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:27,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:27,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:27,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919754702] [2021-11-21 00:32:27,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919754702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:27,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:27,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:27,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189477675] [2021-11-21 00:32:27,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:27,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:27,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:27,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:27,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:27,229 INFO L87 Difference]: Start difference. First operand 179 states and 262 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:29,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:29,885 INFO L93 Difference]: Finished difference Result 288 states and 418 transitions. [2021-11-21 00:32:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-21 00:32:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:29,889 INFO L225 Difference]: With dead ends: 288 [2021-11-21 00:32:29,890 INFO L226 Difference]: Without dead ends: 190 [2021-11-21 00:32:29,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:29,891 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 23 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:29,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 298 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:32:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-21 00:32:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2021-11-21 00:32:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.4662921348314606) internal successors, (261), 178 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 261 transitions. [2021-11-21 00:32:29,904 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 261 transitions. Word has length 52 [2021-11-21 00:32:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:29,904 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 261 transitions. [2021-11-21 00:32:29,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 261 transitions. [2021-11-21 00:32:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-21 00:32:29,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:29,907 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:29,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:32:29,908 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:29,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash -911804725, now seen corresponding path program 1 times [2021-11-21 00:32:29,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:29,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736061730] [2021-11-21 00:32:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:29,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:29,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736061730] [2021-11-21 00:32:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736061730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:29,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:29,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:29,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320044498] [2021-11-21 00:32:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:29,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:29,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:29,998 INFO L87 Difference]: Start difference. First operand 179 states and 261 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:32,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:32,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:32,451 INFO L93 Difference]: Finished difference Result 288 states and 416 transitions. [2021-11-21 00:32:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-21 00:32:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:32,458 INFO L225 Difference]: With dead ends: 288 [2021-11-21 00:32:32,459 INFO L226 Difference]: Without dead ends: 190 [2021-11-21 00:32:32,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:32,460 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 21 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:32,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 296 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-21 00:32:32,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-21 00:32:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2021-11-21 00:32:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.4606741573033708) internal successors, (260), 178 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 260 transitions. [2021-11-21 00:32:32,472 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 260 transitions. Word has length 53 [2021-11-21 00:32:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:32,472 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 260 transitions. [2021-11-21 00:32:32,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 260 transitions. [2021-11-21 00:32:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-21 00:32:32,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:32,476 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:32,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:32:32,476 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:32,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash 437485827, now seen corresponding path program 1 times [2021-11-21 00:32:32,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:32,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635136476] [2021-11-21 00:32:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:32,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:32,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:32,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635136476] [2021-11-21 00:32:32,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635136476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:32,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:32,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:32,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55062207] [2021-11-21 00:32:32,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:32,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:32,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:32,575 INFO L87 Difference]: Start difference. First operand 179 states and 260 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:34,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:35,152 INFO L93 Difference]: Finished difference Result 288 states and 414 transitions. [2021-11-21 00:32:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:35,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-21 00:32:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:35,155 INFO L225 Difference]: With dead ends: 288 [2021-11-21 00:32:35,155 INFO L226 Difference]: Without dead ends: 190 [2021-11-21 00:32:35,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:35,156 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 19 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:35,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 294 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:32:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-21 00:32:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2021-11-21 00:32:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.4550561797752808) internal successors, (259), 178 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 259 transitions. [2021-11-21 00:32:35,166 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 259 transitions. Word has length 54 [2021-11-21 00:32:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:35,167 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 259 transitions. [2021-11-21 00:32:35,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 259 transitions. [2021-11-21 00:32:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 00:32:35,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:35,170 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:35,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:32:35,170 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:35,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash -171077232, now seen corresponding path program 1 times [2021-11-21 00:32:35,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:35,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105204434] [2021-11-21 00:32:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:35,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:35,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:35,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105204434] [2021-11-21 00:32:35,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105204434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:35,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:35,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:35,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328511893] [2021-11-21 00:32:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:35,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:35,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:35,281 INFO L87 Difference]: Start difference. First operand 179 states and 259 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:37,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:37,783 INFO L93 Difference]: Finished difference Result 281 states and 404 transitions. [2021-11-21 00:32:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:37,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-21 00:32:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:37,785 INFO L225 Difference]: With dead ends: 281 [2021-11-21 00:32:37,785 INFO L226 Difference]: Without dead ends: 183 [2021-11-21 00:32:37,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:37,786 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 13 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:37,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 284 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-21 00:32:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-21 00:32:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2021-11-21 00:32:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 258 transitions. [2021-11-21 00:32:37,794 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 258 transitions. Word has length 55 [2021-11-21 00:32:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:37,795 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 258 transitions. [2021-11-21 00:32:37,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2021-11-21 00:32:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-21 00:32:37,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:37,797 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:37,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:32:37,798 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1267788981, now seen corresponding path program 1 times [2021-11-21 00:32:37,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:37,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089310952] [2021-11-21 00:32:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:37,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:37,881 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:37,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089310952] [2021-11-21 00:32:37,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089310952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:32:37,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498806518] [2021-11-21 00:32:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:37,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:37,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:37,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:32:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:38,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:32:38,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:32:38,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:32:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-21 00:32:38,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498806518] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:32:38,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:32:38,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2021-11-21 00:32:38,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954107514] [2021-11-21 00:32:38,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:38,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:38,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:32:38,542 INFO L87 Difference]: Start difference. First operand 179 states and 258 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:40,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:41,304 INFO L93 Difference]: Finished difference Result 347 states and 505 transitions. [2021-11-21 00:32:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:41,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-21 00:32:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:41,307 INFO L225 Difference]: With dead ends: 347 [2021-11-21 00:32:41,307 INFO L226 Difference]: Without dead ends: 345 [2021-11-21 00:32:41,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:32:41,308 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 90 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:41,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 303 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:32:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-21 00:32:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 251. [2021-11-21 00:32:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.468) internal successors, (367), 250 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 367 transitions. [2021-11-21 00:32:41,320 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 367 transitions. Word has length 55 [2021-11-21 00:32:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:41,320 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 367 transitions. [2021-11-21 00:32:41,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 367 transitions. [2021-11-21 00:32:41,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-21 00:32:41,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:41,322 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:41,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:41,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:41,543 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:41,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1943823880, now seen corresponding path program 1 times [2021-11-21 00:32:41,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:41,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517931955] [2021-11-21 00:32:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:41,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 00:32:41,754 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:41,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517931955] [2021-11-21 00:32:41,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517931955] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:32:41,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245761190] [2021-11-21 00:32:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:41,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:41,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:41,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:41,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:32:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:41,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:32:41,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 00:32:42,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:32:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 24 proven. 40 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-21 00:32:42,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245761190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:32:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1662280298] [2021-11-21 00:32:42,610 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2021-11-21 00:32:42,610 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:32:42,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:32:42,620 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:32:42,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:32:45,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:45,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:32:45,493 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Some non-self update cases but no top-level DER relation at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:340) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 00:32:45,504 INFO L158 Benchmark]: Toolchain (without parser) took 35101.57ms. Allocated memory was 107.0MB in the beginning and 239.1MB in the end (delta: 132.1MB). Free memory was 71.6MB in the beginning and 82.3MB in the end (delta: -10.7MB). Peak memory consumption was 122.6MB. Max. memory is 16.1GB. [2021-11-21 00:32:45,504 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory was 60.0MB in the beginning and 60.0MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:32:45,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 799.57ms. Allocated memory is still 107.0MB. Free memory was 71.5MB in the beginning and 60.9MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:32:45,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 128.66ms. Allocated memory is still 107.0MB. Free memory was 60.9MB in the beginning and 56.1MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 00:32:45,505 INFO L158 Benchmark]: Boogie Preprocessor took 154.78ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 56.1MB in the beginning and 112.6MB in the end (delta: -56.5MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-21 00:32:45,505 INFO L158 Benchmark]: RCFGBuilder took 3865.09ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 112.6MB in the beginning and 135.9MB in the end (delta: -23.3MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2021-11-21 00:32:45,506 INFO L158 Benchmark]: TraceAbstraction took 30143.70ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 134.8MB in the beginning and 82.3MB in the end (delta: 52.5MB). Peak memory consumption was 93.6MB. Max. memory is 16.1GB. [2021-11-21 00:32:45,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory was 60.0MB in the beginning and 60.0MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 799.57ms. Allocated memory is still 107.0MB. Free memory was 71.5MB in the beginning and 60.9MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 128.66ms. Allocated memory is still 107.0MB. Free memory was 60.9MB in the beginning and 56.1MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 154.78ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 56.1MB in the beginning and 112.6MB in the end (delta: -56.5MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * RCFGBuilder took 3865.09ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 112.6MB in the beginning and 135.9MB in the end (delta: -23.3MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. * TraceAbstraction took 30143.70ms. Allocated memory was 199.2MB in the beginning and 239.1MB in the end (delta: 39.8MB). Free memory was 134.8MB in the beginning and 82.3MB in the end (delta: 52.5MB). Peak memory consumption was 93.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Some non-self update cases but no top-level DER relation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Some non-self update cases but no top-level DER relation: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 00:32:45,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/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 1c5ecbc156ef402fa8ca002c27ace1df37fef4394f3f2e7d74e739b1fb38fbd5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:32:47,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:32:48,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:32:48,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:32:48,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:32:48,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:32:48,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:32:48,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:32:48,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:32:48,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:32:48,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:32:48,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:32:48,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:32:48,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:32:48,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:32:48,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:32:48,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:32:48,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:32:48,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:32:48,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:32:48,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:32:48,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:32:48,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:32:48,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:32:48,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:32:48,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:32:48,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:32:48,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:32:48,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:32:48,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:32:48,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:32:48,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:32:48,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:32:48,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:32:48,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:32:48,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:32:48,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:32:48,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:32:48,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:32:48,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:32:48,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:32:48,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 00:32:48,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:32:48,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:32:48,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:32:48,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:32:48,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:32:48,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:32:48,119 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:32:48,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:32:48,120 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:32:48,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:32:48,127 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:32:48,128 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:32:48,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:32:48,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:32:48,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:32:48,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:32:48,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:32:48,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:32:48,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:32:48,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:32:48,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:32:48,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:32:48,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:32:48,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:32:48,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:32:48,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:32:48,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:32:48,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:32:48,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:32:48,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:32:48,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:32:48,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:32:48,134 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:32:48,135 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:32:48,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:32:48,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:32:48,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:32:48,136 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5ecbc156ef402fa8ca002c27ace1df37fef4394f3f2e7d74e739b1fb38fbd5 [2021-11-21 00:32:48,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:32:48,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:32:48,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:32:48,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:32:48,570 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:32:48,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2021-11-21 00:32:48,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/141fb1d6d/62947e6512f348a8b7cd43091ab6244b/FLAG2d219916c [2021-11-21 00:32:49,359 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:32:49,360 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c [2021-11-21 00:32:49,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/141fb1d6d/62947e6512f348a8b7cd43091ab6244b/FLAG2d219916c [2021-11-21 00:32:49,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/data/141fb1d6d/62947e6512f348a8b7cd43091ab6244b [2021-11-21 00:32:49,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:32:49,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:32:49,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:32:49,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:32:49,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:32:49,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:32:49" (1/1) ... [2021-11-21 00:32:49,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f7656b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:49, skipping insertion in model container [2021-11-21 00:32:49,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:32:49" (1/1) ... [2021-11-21 00:32:49,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:32:49,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:32:50,107 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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c[65397,65410] [2021-11-21 00:32:50,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:32:50,141 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:32:50,302 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_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/sv-benchmarks/c/openssl/s3_clnt.blast.03.i.cil-1.c[65397,65410] [2021-11-21 00:32:50,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:32:50,332 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:32:50,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50 WrapperNode [2021-11-21 00:32:50,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:32:50,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:32:50,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:32:50,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:32:50,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,442 INFO L137 Inliner]: procedures = 35, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 689 [2021-11-21 00:32:50,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:32:50,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:32:50,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:32:50,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:32:50,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:32:50,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:32:50,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:32:50,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:32:50,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (1/1) ... [2021-11-21 00:32:50,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:32:50,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:50,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:32:50,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:32:50,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:32:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:32:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:32:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:32:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:32:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:32:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:32:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:32:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:32:50,872 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:32:50,873 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:32:50,906 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:32:55,359 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-21 00:32:55,360 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-21 00:32:55,360 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:32:55,371 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:32:55,371 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:32:55,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:32:55 BoogieIcfgContainer [2021-11-21 00:32:55,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:32:55,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:32:55,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:32:55,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:32:55,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:32:49" (1/3) ... [2021-11-21 00:32:55,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270a2b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:32:55, skipping insertion in model container [2021-11-21 00:32:55,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:32:50" (2/3) ... [2021-11-21 00:32:55,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270a2b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:32:55, skipping insertion in model container [2021-11-21 00:32:55,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:32:55" (3/3) ... [2021-11-21 00:32:55,397 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.03.i.cil-1.c [2021-11-21 00:32:55,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:32:55,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:32:55,479 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:32:55,497 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:32:55,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:32:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 00:32:55,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:55,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:55,530 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2021-11-21 00:32:55,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:32:55,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116158758] [2021-11-21 00:32:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:55,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:32:55,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:32:55,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:32:55,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:32:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:55,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:32:55,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:32:56,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:32:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:32:56,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:32:56,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116158758] [2021-11-21 00:32:56,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116158758] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:56,276 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:56,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:32:56,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023439590] [2021-11-21 00:32:56,278 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:56,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:56,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:32:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:56,311 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:56,498 INFO L93 Difference]: Finished difference Result 485 states and 820 transitions. [2021-11-21 00:32:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:32:56,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-21 00:32:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:56,513 INFO L225 Difference]: With dead ends: 485 [2021-11-21 00:32:56,514 INFO L226 Difference]: Without dead ends: 312 [2021-11-21 00:32:56,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:56,521 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 359 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:56,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 585 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:32:56,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-21 00:32:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-21 00:32:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.5016077170418007) internal successors, (467), 311 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 467 transitions. [2021-11-21 00:32:56,582 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 467 transitions. Word has length 24 [2021-11-21 00:32:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:56,583 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 467 transitions. [2021-11-21 00:32:56,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 467 transitions. [2021-11-21 00:32:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 00:32:56,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:56,588 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:56,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:56,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:32:56,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1854239308, now seen corresponding path program 1 times [2021-11-21 00:32:56,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:32:56,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887563261] [2021-11-21 00:32:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:56,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:32:56,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:32:56,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:32:56,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:32:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:57,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:32:57,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:32:57,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:32:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:32:57,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:32:57,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887563261] [2021-11-21 00:32:57,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887563261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:57,877 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:57,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:32:57,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335416588] [2021-11-21 00:32:57,878 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:57,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:57,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:32:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:57,885 INFO L87 Difference]: Start difference. First operand 312 states and 467 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:32:59,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:00,078 INFO L93 Difference]: Finished difference Result 716 states and 1078 transitions. [2021-11-21 00:33:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:33:00,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-21 00:33:00,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:00,084 INFO L225 Difference]: With dead ends: 716 [2021-11-21 00:33:00,084 INFO L226 Difference]: Without dead ends: 512 [2021-11-21 00:33:00,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:33:00,087 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 267 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:00,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 596 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 00:33:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-21 00:33:00,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-11-21 00:33:00,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.4951076320939334) internal successors, (764), 511 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 764 transitions. [2021-11-21 00:33:00,154 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 764 transitions. Word has length 60 [2021-11-21 00:33:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:00,155 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 764 transitions. [2021-11-21 00:33:00,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 764 transitions. [2021-11-21 00:33:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-21 00:33:00,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:00,168 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:00,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 00:33:00,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:33:00,381 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:33:00,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:00,382 INFO L85 PathProgramCache]: Analyzing trace with hash 922615118, now seen corresponding path program 1 times [2021-11-21 00:33:00,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:33:00,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702285663] [2021-11-21 00:33:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:00,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:33:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:33:00,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:33:00,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab4a554-5bc0-44e0-8ce7-de40277ecb40/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:33:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:00,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:33:00,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:01,579 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:33:01,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 2058 treesize of output 1842 [2021-11-21 00:33:10,381 WARN L227 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:33:10,382 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:33:10,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2067 treesize of output 1935 [2021-11-21 00:41:45,138 WARN L227 SmtUtils]: Spent 8.58m on a formula simplification. DAG size of input: 319 DAG size of output: 198 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:41:45,141 INFO L354 Elim1Store]: treesize reduction 2420, result has 36.3 percent of original size [2021-11-21 00:41:45,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 1863 treesize of output 1873 [2021-11-21 00:41:45,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1906 treesize of output 1708 [2021-11-21 00:41:45,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1708 treesize of output 1510